Easy Onigiri Recipes (Japanese Rice Balls) | Sudachi https://sudachirecipes.com/rice-ball-recipes/ Mastering Japanese Recipes at Home Mon, 11 Aug 2025 13:50:51 +0000 en-US hourly 1 https://sudachirecipes.com/wp-content/uploads/2025/08/cropped-sudachi-icon-512-32x32.png Easy Onigiri Recipes (Japanese Rice Balls) | Sudachi https://sudachirecipes.com/rice-ball-recipes/ 32 32 Mentaiko Mayo Onigiri (Rice Balls) https://sudachirecipes.com/mentaiko-mayo-onigiri/ https://sudachirecipes.com/mentaiko-mayo-onigiri/#respond Tue, 15 Apr 2025 00:30:23 +0000 https://sudachirecipes.com/?p=46642 Mentaiko Mayo Onigiri blends the subtle heat of spicy cod roe with rich and creamy Japanese mayonnaise to create the most irresistible rice ball!

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What is Mentaiko Onigiri?

When you bite into a mentaiko onigiri (明太子おにぎり), you’ll see why this simple rice ball has become so popular in Japan. The pop and gentle heat of mentaiko (cod roe pickled in chili peppers) takes ordinary rice to the next level.

Mentaiko’s history is tied to Korea, where it was first used as a way to preserve food during harsh winters. It was adapted in Fukuoka City in 1949 to align with Japanese taste preferences. That’s why today, mentaiko and Hakata (in Fukuoka) are basically inseparable in Japan’s food landscape.

What makes mentaiko such a great onigiri filling? It’s all in the mix of textures: the soft white rice and the sweet, coral-colored roe that’s got a kick of salt and spice. Together, they create that perfect harmony that rice balls were made for.

In this recipe, I’ll show you how to make this classic even better by blending mentaiko with Japanese mayo for an easy yet irresistible hand-held meal!

mentaiko onigiri held up in hand

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Mentaiko Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this Mentaiko Mayo Onigiri recipe for a complete visual walkthrough!

STEP
Preparing the Mentaiko
Mentaiko (spicy roe) scraped out of skin on a wooden chopping board with metal spoon

Start with fresh mentaiko, looking for vibrant red or pink roe with firm, intact membranes. Using kitchen scissors, carefully cut along the membrane to open the mentaiko sac.

Gently separate the roe from the thin outer skin without tearing the membrane using a spoon. But don’t discard it! You can enjoy it separately as a chef’s treat.

STEP
Creating the Perfect Filling
spicy mentaiko, mayonnaie and condiments in a small glass bowl on a white background

In a small mixing bowl, combine the separated mentaiko roe with Japanese mayonnaise, soy sauce, and dashi granules.

mentaiko onigiri filling in a glass bowl with metal spoon on a white background

Mix gently but thoroughly until the ingredients are fully incorporated into a creamy, coral-colored spread. The consistency should be smooth but still have some texture from the tiny mentaiko eggs.

STEP
Shaping Your Onigiri

If you’re using a mold, lightly salt the onigiri mold to enhance flavor. Next, add about 50 to 60 grams of rice (about half the total amount for one onigiri) to the mold, making a small indentation in the center for the filling.

two hands rubbing palms with salt

To shape the rice by hand, wet your hands with cold water and sprinkle with salt to prevent sticking. Take the full amount of rice (100-120g) for one onigiri and flatten it on your palm.

Why salt matters on the exterior

The traditional salt coating on onigiri has many uses beyond just making it taste better. It acts as a natural preservative, creating a slight barrier against bacteria

This technique dates back to when onigiri were made as portable meals for travelers and field workers.

The salt also makes a nice contrast to the subtly sweet Japanese rice, bringing out the creamy mentaiko filling.

For a mess-free approach, lay a piece of plastic wrap on a flat surface and place your rice portion in the center. The plastic creates a barrier that prevents sticking while allowing you to shape the rice easily.

Remember to sprinkle salt on the rice before wrapping to ensure proper seasoning.

STEP
Add the Filling
Japanese rice in an onigiri mold with mentaiko filling

Spoon the mentaiko-mayonnaise mixture into the rice indentation you’ve created. The amount will depend on your preference, but typically 1-2 tablespoons provides the perfect rice-to-filling ratio.

The mentaiko should be evenly distributed but concentrated in the center of your onigiri.

STEP
Complete the Onigiri Shape
sprinkling salt over mentaiko onigiri to flavor the outside of the rice

If you’re using a mold, cover the filling with the rest of the rice. Use the mold lid to press and compact the onigiri, making sure it’s all stuck together in one shape.

Consider sprinkling a pinch of salt over the top surface for enhanced flavor.

gif to show how to shape onigiri (rice ball) by hand

If you’re shaping by hand, fold the rice over the filling, making sure it’s completely encased. Then, use your palms to shape it into a triangle, oval, or round shape, taking care to keep the filling inside.

Shaping technique

For hand-shaping, use three swift motions rather than continuous pressing. Form two sides of the triangle with your dominant hand, then rotate and form the third side.

STEP
Wrapping with Nori
mentaiko onigiri wrapped with nori held up in hand

Just before serving, wrap your onigiri with a strip of nori seaweed.

This timing is crucial-wrapping too far in advance will cause the crisp nori to absorb moisture from the rice and become chewy. For the best textural contrast, apply the nori immediately before eating.

Jump to Full Recipe Measurements

Essential Tips & Tricks

  • Use short-grain Japanese rice – other varieties won’t stick together properly and will fall apart.
  • Handle the mentaiko sac carefully when opening – gentle scissors cuts prevent rupturing the delicate membrane.
  • Don’t overfill your onigiri – 1-2 tablespoons of filling per onigiri is sufficient.
  • If the filling seems to runny, try chilling it in the fridge to firm it up.
  • Mentaiko filling can be kept in the fridge for 1-2 days so feel free to make it the night before or store leftovers for the next day.
  • Wrap with nori immediately before eating for the best texture contrast.

With these simple tips in mind, you’re set for success every time you make Mentaiko Onigiri.

holding up two halves of mentaiko onigiri to reveal the filling

I hope you enjoy this Mentaiko Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

More Onigiri Recipes

Hungry for more? Explore my onigiri recipe collection to find your next favorite dishes!

Mentaiko onigiri with one cut in half to show the filling on a small bamboo tray on a dark gray wood-effect background with red fabric in the background
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Mentaiko Mayo Onigiri

Mentaiko Onigiri blends the subtle heat and umami of spicy cod roe with rich and creamy Japanese mayonnaise to create the most irresistible rice ball filling!
Course Bento, Breakfast, Lunch, Snacks
Cuisine Japanese
Duration 15 minutes or less
Diet Dairy Free, Pescatarian
Prep Time 10 minutes
Total Time 10 minutes
Servings 6 onigiri
Calories 226kcal
Author Yuto Omura

Ingredients

Instructions

  • Place 50 g spicy cod roe (mentaiko) on a cutting board and make an incision lengthways through the skin using scissors or a sharp knife. Open the mentaiko and use a spoon to scrape out the eggs.
    Mentaiko (spicy roe) scraped out of skin on a wooden chopping board with metal spoon
  • Transfer the mentaiko to a bowl (you can eat or discard the skin) and add 3 tbsp Japanese mayonnaise, ¼ tsp Japanese soy sauce (koikuchi shoyu) and ⅛ tsp dashi granules. Mix until evenly distributed.
    mentaiko onigiri filling in a glass bowl with metal spoon on a white background
  • Divide 720 g cooked Japanese short-grain rice into 120g portions. If shaping by hand, wet your hands and sprinkle them with salt. If using a mold, sprinkle the mold with a pinch of salt.
    two hands rubbing palms with salt
  • To shape by hand, take a portion of rice and flatten it on your palm. Make a dent in the center and add about 1-2 tbsp of the filling. If using a mold, fill with about 50g of rice and press a dent in the center before adding the filling.
    Japanese rice in an onigiri mold with mentaiko filling
  • If shaping by hand, fold the rice over to seal the filling inside, then press and turn to shape into a rounded triangle. If using a mold, top with another 50g of rice and add another pinch of salt. Press the lid down firmly to shape, then remove from the mold.
    sprinkling salt over mentaiko onigiri to flavor the outside of the rice
  • Wrap with nori and enjoy!
    mentaiko onigiri wrapped with nori held up in hand

Video

Notes

  • Onigiri should be made with Japanese short-grain white rice. For best results, use a rice cooker or follow my stovetop cooking method.
  • 2 Japanese rice cup of raw rice (300g) makes enough cooked rice for approximately 6 rice balls. 
  • This recipe uses 120g of cooked rice per rice ball. If changing the size, reduce or increase the filling accordingly.
  • If the mentaiko filling seems too runny, place it in the fridge as it will thicken when chilled. Leftover filling can be stored in the fridge for 1-2 days.
  • To store, wrap each onigiri with plastic wrap (without nori) and store it in the freezer. Defrost in the microwave and wrap with nori just before serving.

Nutrition

Calories: 226kcal | Carbohydrates: 30g | Protein: 5g | Fat: 10g | Saturated Fat: 2g | Polyunsaturated Fat: 5g | Monounsaturated Fat: 2g | Cholesterol: 27mg | Sodium: 363mg | Potassium: 113mg | Fiber: 1g | Sugar: 0.1g | Vitamin A: 25IU | Vitamin C: 0.2mg | Calcium: 19mg | Iron: 1mg

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Negitoro Onigiri (Mashed Tuna Rice Balls) https://sudachirecipes.com/negitoro-onigiri/ https://sudachirecipes.com/negitoro-onigiri/#respond Thu, 17 Oct 2024 23:41:23 +0000 https://sudachirecipes.com/?p=38960 Negitoro Onigiri is a delicious rice ball filled with perfectly soft minced sashimi-grade tuna and fresh green onions. This recipe beats convenience store versions hands down!

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How I Developed This Negitoro Rice Ball Recipe

Have you ever had that moment when you realize homemade beats store-bought? That’s exactly what happened with my negitoro onigiri! I used to be a convenience store onigiri fan for negitoro, but this recipe changed everything.

The star of the show is sashimi-grade tuna. But here’s the catch: I added a secret ingredient to create a melt-in-your-mouth experience you won’t believe!

Fancy finding out what my secret ingredient is? Why not give this recipe a try!

Negitoro onigiri (rice ball) on a gray plate with green brushstroke design, with mashed tuna and chopped green onions in a rectangular plate the background

Key Ingredients & Substitution Ideas

  • Sashimi-Grade Tuna: Go for the most cost-effective lean tuna you can find, and make sure it’s sashimi-grade. I’ve put together this recipe to make even budget-friendly cuts into a luxuriously tender, melt-in-your-mouth delicacy.
  • Onigiri Base: We use cooked Japanese short-grain rice, nori seaweed strips, and just a pinch of salt. Tip: 1 Japanese rice cup (150g rice/175ml liquid volume) of uncooked rice will make about 330g of rice, enough for 3 rice balls. This recipe is for 4, so you will need to cook 1 and one-third cups of rice.
  • Secret Ingredients: To create the melt-in-mouth texture, we use neutral-flavored oil, mayonnaise, and dashi granules. I used rice bran oil, but it’s up to you.
  • Wasabi Paste: It doesn’t matter if you go for the store-bought paste or grate your own fresh wasabi root. If wasabi isn’t your thing, no problem! You can leave it out or adjust the amount to suit your taste.
  • Green Onion: You’ve got to have finely chopped green onions in authentic negitoro!
  • Dark Soy Sauce: We just use a drop of dark soy sauce for each onigiri.
Jump to Full Recipe Measurements
holding negitoro onigiri in hand

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Negitoro Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

This section aims to provide a comprehensive overview of the cooking steps and techniques with visuals. It also includes more in-depth tips and tricks and explains why I do what I do.

STEP
Prepare the Tuna (Optional)

Give the tuna block a quick rinse under cold water and then pat it dry with paper towels. Then sprinkle lightly with salt, a method called “shiojime,” which will enhance the flavor and get rid of any fishy odor.

Next, put the salted tuna in a container that’s elevated on one side to drain off any excess moisture for about 10 to 15 minutes.

Rinse the tuna again under cold water and pat it dry.

You can skip this shiojime process if you like, but I recommend it for the best flavor.

STEP
Mash the Tuna

Use a spoon to scrape the tuna flesh.

Then mash it finely with a knife.

In a bowl, mix the mashed tuna with oil, mayonnaise, and dashi granules until everything is well incorporated.

This is how we make melt-in-mouth negitoro.

STEP
Shape the Onigiri Base

If you’re using a mold, lightly salt the onigiri mold to enhance flavor. Next, add about 50 to 60 grams of rice (about half the total amount for one onigiri) to the mold, making a small indentation in the center for the filling.

To shape the rice by hand, wet your hands with cold water and sprinkle with salt to prevent sticking. Take the full amount of rice (100-120g) for one onigiri and flatten it on your palm.

a moving image showing how to add fillings to onigiri rice balls
STEP
Add the Filling

Spoon the negitoro mix into the rice indentation.

Mashed tuna (negitoro) in rice in a plastic onigiri (rice ball) mold on a white background

Followed by a few chopped green onions and a small dab of wasabi.

Mashed tuna (negitoro) topped with chopped green onion and wasabi paste in the middle of rice in a plastic onigiri (rice ball) mold on a white background

Add just a drop of soy sauce.

Pouring soy sauce over negitoro onigir in a plastic rice ball mold on a white background

Whichever way you choose, make sure the rice has cooled a bit to prevent cooking the tuna inside.

STEP
Complete the Onigiri Shape

If you’re using mold, cover the filling with the remaining rice. Use the mold lid to press and compact the onigiri, making sure it’s all stuck together in one shape.

pressing onigiri into shape using a plastic rice ball mold

I’d also like to sprinkle a pinch of salt over the top as well.

sprinkling the surface of negitoro rice ball with a pinch of salt

If you’re shaping by hand, just fold the rice over the filling, making sure it’s completely encased. Then, use your palms to shape it into a triangle, taking care to keep the filling inside.

shaping onigiri rice ball by hand
STEP
Finish and Serve

Just wrap each onigiri in a strip of nori seaweed. For the best taste and texture, serve right away.

Negitoro onigiri (rice ball) on a gray plate with green brushstroke design, with mashed tuna and chopped green onions in a rectangular plate the background

The crunch of the nori contrasts perfectly with the soft rice and creamy tuna filling.

Jump to Full Recipe Measurements

I hope you enjoy this Negitoro Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

ripping negitoro rice ball open
Negitoro onigiri (rice ball) on a gray plate with green brushstroke design, with mashed tuna and chopped green onions in a rectangular plate the background
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Negitoro Onigiri (Minced Tuna Rice Ball)

Negitoro Onigiri is a delicious rice ball filled with perfectly soft minced sashimi-grade tuna and fresh green onions. This recipe beats convenience store versions hands down!
Course Breakfast, Lunch, Snacks
Cuisine Japanese
Duration 30 minutes
Diet Dairy Free, Pescatarian, Raw
Prep Time 30 minutes
Total Time 30 minutes
Servings 4 rice balls
Calories 186kcal
Author Yuto Omura

Ingredients

Instructions

  • Shiojime (optional step for improved texture & flavor). Wash and dry 60 g sashimi grade tuna block, then sprinkle with salt all over and place it in a container. Store the container in the fridge for 10-15 minutes with one side elevated to drain the excess moisture. Wash off the salt and pat dry with kitchen paper.
    salted tuna in a steel rectangular container propped up on one side to allow excess moisture to drain to the bottom
  • Use a spoon to scrape the tuna flesh.
    scraping block of sashimi grade tuna with a spoon to make negitoro
  • Chop with a knife until it becomes roughly mashed.
    Roughly chopping sashimi-grade tuna on a wooden chopping board to make negitoro
  • Place the mashed tuna in a bowl and add ½ tbsp Japanese mayonnaise, ½ tsp cooking oil and ⅛ tsp dashi granules. Mix until combined.
    mashed sashimi-grade tuna mixed with oil, dashi granules and mayonnaise in a bowl
  • Measure out 440 g cooked Japanese short-grain rice and divide it into equal portions. If using a rice ball mold, sprinkle a pinch of salt into the mold and add half a portion (approx 55g / 2oz) of rice. Make a dent in the center and add a spoonful of mashed tuna.
    Mashed tuna (negitoro) in rice in a plastic onigiri (rice ball) mold on a white background
  • If shaping by hand, wet your hands and sprinkle them with a pinch of salt. Take a portion of rice (approx 110g / 4oz) and spread it flat on your palm, placing the tuna in the center. (Wet hands to prevent sticking.)
    a moving image showing how to add fillings to onigiri rice balls
  • Top the tuna with a small blob of wasabi and a few finely chopped green onions. Add 1 drop of Japanese soy sauce (koikuchi shoyu).
    Pouring soy sauce over negitoro onigir in a plastic rice ball mold on a white background
  • For the mold, cover with the other half of the rice and sprinkle with a pinch of salt. For hand-shaping, fold the rice over and then shape into a rounded triangle.
    sprinkling the surface of negitoro rice ball with a pinch of salt
  • Wrap with nori and enjoy!
    Negitoro onigiri (rice ball) on a gray plate with green brushstroke design, with mashed tuna and chopped green onions in a rectangular plate the background

Nutrition

Calories: 186kcal | Carbohydrates: 32g | Protein: 7g | Fat: 3g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Cholesterol: 7mg | Sodium: 110mg | Potassium: 128mg | Fiber: 1g | Sugar: 0.1g | Vitamin A: 354IU | Vitamin C: 1mg | Calcium: 20mg | Iron: 1mg

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Garlic Miso Rice Balls https://sudachirecipes.com/garlic-miso-onigiri/ https://sudachirecipes.com/garlic-miso-onigiri/#respond Wed, 09 Oct 2024 05:30:00 +0000 https://sudachirecipes.com/?p=38956 This quick and easy onigiri is filled with a rich and flavorful garlic infused miso paste filling. It's the perfect breakfast, lunch or snack for miso lovers!

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How I Developed This Miso Onigiri

When I first started thinking about this recipe, I was set on using garlic and miso (known as ninniku miso) with a little sweetness.

There are lots of different ways to make garlic miso. I was using it for onigiri, so I knew I had to keep things simple. So I got creative and came up with an easy process.

If you’re looking for a rich and flavorful rice ball filling that is quick and easy to prepare, this rice ball is perfect for you! You can also use an additive-free miso to make it suitable for vegetarians and vegans!

3 Miso onigiri rice balls topped with a small blob of miso filling lined up on a wooden chopping board on gray surface side view

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Garlic Miso Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

This section aims to provide a comprehensive overview of the cooking steps and techniques with visuals. It also includes more in-depth tips and tricks and explains why I do what I do.

STEP
Prepare Garlic Miso Filling

Heat a small frying pan over medium heat and add a little sesame oil. Fry the minced garlic and Japanese leek until they release their aromas.

frying finely chopped Japanese leeks in a frying pan with wooden spatula on the stove

Next, add the sake and mirin to the pan and stir to combine.

sautéed finely diced Japanese leeks in a frying pan with condiments to make miso onigiri filling

Now, mix in the miso paste and chili powder, stirring all the while.

Miso onigiri filling in a frying pan with wooden spatula on the stove

Cook until the mixture thickens, then remove from heat. It’s important to get the paste to the right consistency so it’s easy to fill the onigiri, and so they don’t become soggy.

STEP
Shape Onigiri

If using a mold: Lightly salt the onigiri mold to enhance flavor. Add 50-60 grams of rice (half the total amount per onigiri) to the mold, creating an indentation in the center for the filling.

For hand-shaping: Wet your hands with cold water and sprinkle with salt to prevent sticking. Take the full amount of rice for one onigiri and flatten it on your palm.

a moving image showing how to add fillings to onigiri rice balls
STEP
Add Filling

For molded onigiri: Spoon the garlic miso mixture into the indentation in the center of the rice. I use about 1/2 a tablespoon per rice ball.

Rice with miso filling in an onigiri rice ball mold

For hand-shaped onigiri: Place the filling in the center of the flattened rice.

STEP
Complete Shaping

Mold method: Add the remaining rice on top of the filling. Use the mold lid to firmly press and compact the onigiri.

Using a plastic rice ball mold to make onigiri with miso filling

Hand method: Gently fold the rice over the filling, encasing it completely. Shape into a triangle using your palms, ensuring the filling stays securely inside.

shaping onigiri rice ball by hand
STEP
Finish and Serve

Wrap each onigiri in a strip of nori seaweed. For the best taste and texture, serve immediately.

Holding an miso onigiri rice ball filled with homemade miso filling with wooden chopping board in the background
Jump to Full Recipe Measurements

How to Store

Rice balls are best eaten as soon as they’re made, but if you’re preparing them in advance, simply wrap them and freeze them without the nori. Reheat in the microwave until the rice has been revived to its hot and fluffy cooked state, then wrap with nori right before eating and enjoy!

Tip: Don’t refrigerate onigiri as it dries out the rice. If you’re transporting them to work or school, store them in a lunch box with an ice pack to help preserve them for longer and consume them within a few hours.

I hope you enjoy this Garlic Miso Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

3 Miso onigiri rice balls topped with a small blob of miso filling lined up on a wooden chopping board on gray surface
Print

Garlic Miso Rice Balls

This quick and easy onigiri is filled with a rich and flavorful garlic-infused miso paste filling. It's the perfect breakfast, lunch, or snack for miso lovers!
Course Bento, Breakfast, Lunch, Snacks
Cuisine Japanese
Method Pan fry
Duration 15 minutes or less
Diet Dairy Free, Egg Free, Pescatarian, Vegan, Vegetarian
Prep Time 10 minutes
Cook Time 5 minutes
Total Time 15 minutes
Servings 4 servings
Calories 214kcal
Author Yuto Omura

Ingredients

Instructions

  • Heat a small pan over medium and add 1 tbsp sesame oil. Add 1 tbsp Japanese leek (naganegi) and 3 cloves garlic finely diced and fry until fragrant. Be careful not to let them burn.
    frying finely chopped Japanese leeks in a frying pan with wooden spatula on the stove
  • Add 1 tbsp sake and 1 tbsp mirin to the pan and mix well.
    sautéed finely diced Japanese leeks in a frying pan with condiments to make miso onigiri filling
  • Add ¼ tsp chili powder and 2 tbsp yellow miso paste (awase) while mixing continuously. Once thickened, remove from the heat.
    Miso onigiri filling in a frying pan with wooden spatula on the stove
  • Divide 440 g cooked Japanese short-grain rice into equal portions of approximately 110g per rice ball. Sprinkle a rice ball mold with a few pinches of salt and then add half of a portion of rice, Press a dent into the middle and add about 1/2 tbsp of the miso mixture.
    Rice with miso filling in an onigiri rice ball mold
  • Add the other half of the rice, sprinkle with a pinch of salt and press the lid on top to finish shaping. Alternatively, shape by hand making sure to wet your hands before handling the rice to prevent sticking and sprinkle your palms with salt to season the outside. (See in post for more detailed instructions on hand-shaping.)
    Using a plastic rice ball mold to make onigiri with miso filling
  • Wrap with nori and enjoy!
    Holding an miso onigiri rice ball filled with homemade miso filling with wooden chopping board in the background

Nutrition

Calories: 214kcal | Carbohydrates: 37g | Protein: 5g | Fat: 4g | Saturated Fat: 1g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Cholesterol: 0.3mg | Sodium: 327mg | Potassium: 125mg | Fiber: 1g | Sugar: 2g | Vitamin A: 58IU | Vitamin C: 2mg | Calcium: 29mg | Iron: 1mg

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Pork-Wrapped Rice Balls (Nikumaki Onigiri) https://sudachirecipes.com/nikumaki-onigiri/ https://sudachirecipes.com/nikumaki-onigiri/#comments Fri, 01 Mar 2024 01:52:55 +0000 https://sudachirecipes.com/?p=32642 Simple Japanese rice balls wrapped in tender and crispy pork belly coated in a teriyaki-style glaze. This is an addictive onigiri recipe like no other and surprisingly simple to make!

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Featured Comment:

“WOW! this is amazing! At first I was overwhelmed, but it came together so well! I used bacon (no pork belly anywhere to be found in the town where I live), and the cut was not as thin as I hoped for, but I think the cornstarch helped keep everything together. 6 perfect pork covered rice balls…and I will make this again! Thank you for such a wonderful and (deceptively) easy-to-make recipe!”

– Charissa

What is Nikumaki Onigiri?

Nikumaki Onigiri (肉巻きおにぎり) is a type of rice ball that is wrapped in thinly sliced pork instead of the traditional nori seaweed and then fried with a soy-sauce-based sauce to give it a savory flavor.

This variation of onigiri might not be well-known outside of Japan, but it is quite popular within the country.

The most appealing thing about this dish is its addictive flavor and unique texture, which sets it apart from any other variation of onigiri. It is a very satisfying dish that is definitely worth trying!

Three nikumaki onigiri (pork belly wrapped rice balls) arranged on a cream plate decorated with Perilla leaves and sprinkled with sesame seeds
Yuto headshot

How I Developed This Recipe


All the recipes I share on my blog are ones I have developed, cooked, and then thoroughly enjoyed myself. However, this particular recipe was so good it became an instant favorite and I couldn’t wait to share it!

The thing about this dish lies in its teriyaki-style flavor, complemented by garlic and pork wrappers, which are made to be as crispy as possible.

It’s a simple dish with a slight junky feel, but sometimes such a dish can fill your heart. Please give it a try!

Three nikumaki onigiri (pork belly wrapped rice balls) arranged on a cream plate decorated with Perilla leaves and sprinkled with sesame seeds

Ingredients & Substitution Ideas

  • Thinly Sliced Pork: While any thinly sliced part works, I recommend pork belly for its rich flavor and crispy texture. Try and use long pieces for easy wrapping.
  • Cooked Japanese Short-Grain Rice: The sticky texture of Japanese rice is essential for rice balls. Find specific recommendations for brands available in the U.S. detailed in the How to Cook Japanese Rice Recipe.
  • Cornstarch: Coating the pork in a thin layer of starch not only crisps up the surface and improves the overall texture and flavor, but also aids in thickening the sauce. Potato starch can be used as an alternative.
  • Sesame Oil: Adds a nuanced flavor to marinades.
  • Sake: Beverage-grade, unsalted sake is ideal for its clean taste. Cooking sake can be used if you adjust the dish’s saltiness accordingly. A ‘Sake 101‘ article can offer more insights.
  • Soy Sauce: For soy sauce brand recommendations, refer to my soy sauce guide.
  • Mirin: Go for Hon Mirin if possible.
  • Sugar: Regular sugar that you normally use is perfectly fine.
  • Ginger & Garlic Paste: While grating fresh ginger and garlic offers the best flavor, store-bought pastes are convenient alternatives.
Jump to Full Recipe Measurements
A close up of pan fried nikumaki onigiri (pork belly wrapped rice balls) sprinkled with sesame seeds

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Nikumaki Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

STEP
Portioning the Rice

Start by dividing cooked Japanese rice into six equal portions, each weighing about 50g. Shape each portion into compact bales, making sure they’re firm enough to hold their shape.

Tip: Wet your hands before handling rice to prevent sticking and be careful not to press too hard and crush the rice.

A ball of rice shaped into a barrel
STEP
Wrapping with Pork

Next, take a slice of pork and wrap it around the rice ball lengthwise for a snug fit.

Wrapping raw pork belly around the long side of the barrel-shaped rice ball

Use a second slice of pork to wrap in the opposite direction, ensuring complete coverage of the rice.

Wrapping raw pork belly around the short side of the barrel-shaped rice ball

Trim any excess pork that extends beyond the rice to avoid overlap; these trimmings can be used for other rice balls.

trimming the overlapping pork belly slice for nikumaki onigiri

The goal here is a tight wrap that fully encases the rice.

rice ball wrapped with thinly sliced pork belly in a metal container
STEP
Coating with Cornstarch

Once wrapped, lightly coat each rice ball with cornstarch. Lay out some cornstarch on a plate and roll the pork-wrapped rice in it until evenly coated. This step helps to create a crispy exterior when fried.

pork belly wrapped rice balls dusted with cornstarch on a black plate
STEP
Frying

Heat sesame oil in a large frying pan over medium heat. Gently place the rice balls in the pan and fry, turning occasionally, until golden brown and crispy on all sides.

pork belly wrapped rice balls frying in a pan

This is where the magic happens, transforming the pork into a crispy shell around the soft rice.

cooked nikumaki onigiri (pork belly wrapped rice balls) in a pan

While the rice balls are frying, mix together sake, soy sauce, mirin, sugar, ginger, and garlic in a bowl.

teriyaki sauce mixed in a small glass bowl
STEP
Glazing

After the rice balls are crispy, wipe any excess oil from the pan using kitchen paper. Then, crank up the heat to high and add the sauce. Cook, turning the rice balls to ensure they’re evenly coated until the sauce reduces to a thick glaze.

Turn regularly to prevent burning and lower the heat if you feel its thickening too quickly.

Nikumaki onigiri (pork belly wrapped rice balls) cooking in sauce in a pan
STEP
Finishing Touches

Sprinkle sesame seeds over the glazed rice balls for a crunchy texture and a nutty taste. For a final touch, wrap each rice ball in a shiso leaf (optional). Not only does this add a burst of color and freshness, but it also makes them easier to handle and eat.

Three nikumaki onigiri (pork belly wrapped rice balls) arranged on a cream plate decorated with Perilla leaves and sprinkled with sesame seeds
Jump to Full Recipe Measurements

How to Store

To enjoy nikumaki at their best, I recommend eating them straight away. Avoid storing and reheating since this will cause the texture of both the rice and pork to deteriorate.

If you are taking them in a lunch box, store in a cooler bag with an ice pack and eat them as soon as possible.

Best eaten the same day.

Nikumaki Onigiri (Pork belly wrapped rice ball) held in hand with bite missing

I hope you enjoy this Nikumaki Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

Three nikumaki onigiri (pork belly wrapped rice balls) arranged on a cream plate decorated with Perilla leaves and sprinkled with sesame seeds
Print

Pork-Wrapped Rice Balls (Nikumaki Onigiri)

Simple Japanese rice balls wrapped in tender and crispy pork belly coated in a teriyaki-style glaze. This is an addictive onigiri recipe like no other!
Course Appetizers, Bento, Lunch, Snacks
Cuisine Japanese
Method Pan fry
Duration 20 minutes
Diet Dairy Free, Egg Free
Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
Servings 6 servings
Calories 315kcal
Author Yuto Omura

Ingredients

  • Ingredient cooked japanese rice300 g cooked Japanese short-grain rice 50g / ⅓ cup per rice ball
  • Ingredient thinly sliced pork belly9 slices thinly sliced pork belly (approx 12 inches/30cm) 1 ½ slices per rice ball
  • 1 tbsp cornstarch
  • Ingredient cooking oil½ tbsp cooking oil
  • bottles of Japanese soy sauce on a white background3 tbsp Japanese soy sauce (koikuchi shoyu)
  • Ingredient sake3 tbsp sake
  • 2 tbsp mirin
  • sugar1 tbsp sugar
  • Ginger1 tsp grated ginger root or ginger paste
  • 1 tsp grated garlic or garlic paste
  • 1 tsp toasted white sesame seeds (optional)
  • 6 perilla leaves (shiso) optional

Instructions

  • Divide 300 g cooked Japanese short-grain rice into 50g pieces (approx 1/3 cup). Wet your hands and shape each portion into a barrel shape. Press the rice firmly enough to hold its shape but be careful not to crush the rice.
    A ball of rice shaped into a barrel
  • Wrap the barrel lengthways with one slice of pork belly and trim the excess with scissors.
    Wrapping raw pork belly around the long side of the barrel-shaped rice ball
  • Wrap the excess and one half of another slice in the other direction until the rice is completely covered. Each rice ball should use 1 and a half 12 inch pieces of pork belly.
    trimming the overlapping pork belly slice for nikumaki onigiri
  • Dust a plate with 1 tbsp cornstarch and coat each pork-wrapped rice ball with a thin layer. Dust off any excess before adding them to the pan.
    pork belly wrapped rice balls dusted with cornstarch on a black plate
  • Heat a large frying pan on medium and add ½ tbsp cooking oil. Place the rice balls in the pan and fry. Turn occasionally until golden and lightly crispy all over.
    pork belly wrapped rice balls frying in a pan
  • While you wait, take a small bowl and mix 3 tbsp Japanese soy sauce (koikuchi shoyu), 3 tbsp sake, 2 tbsp mirin, 1 tbsp sugar, 1 tsp grated ginger root and 1 tsp grated garlic.
    teriyaki sauce mixed in a small glass bowl
  • Once the pork is crispy and cooked through, use kitchen paper to wipe up the excess oil in the pan.
    cooked nikumaki onigiri (pork belly wrapped rice balls) in a pan
  • Increase the heat to high and pour the sauce into the pan. Turn the rice balls frequently until coated in sauce. Once the sauce has thickened and the rice balls are fully covered, remove the pan from the heat.
    Nikumaki onigiri (pork belly wrapped rice balls) cooking in sauce in a pan
  • Sprinkle the top with 1 tsp toasted white sesame seeds and wrap each rice ball with a perilla leaf. Enjoy!
    Three nikumaki onigiri (pork belly wrapped rice balls) arranged on a cream plate decorated with Perilla leaves and sprinkled with sesame seeds

Nutrition

Calories: 315kcal | Carbohydrates: 21g | Protein: 5g | Fat: 21g | Saturated Fat: 7g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 10g | Cholesterol: 27mg | Sodium: 436mg | Potassium: 111mg | Fiber: 0.2g | Sugar: 4g | Vitamin A: 4IU | Vitamin C: 0.3mg | Calcium: 13mg | Iron: 1mg

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Salmon Flakes (Better Than Store-Bought!) https://sudachirecipes.com/salmon-flakes/ https://sudachirecipes.com/salmon-flakes/#comments Mon, 22 Jan 2024 06:25:19 +0000 https://sudachirecipes.com/?p=30893 These succulent salmon flakes are delicately seasoned with Japanese condiments and are the perfect pairing for rice, especially rice balls!

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Featured Comment:

“A top-tier and great to make-ahead upgrade for every salad or rice bowl. WOULD be perfect for work-day meal prep, but somehow it always disappears before making it into the lunch box”

– Peti

What Are Salmon Flakes?

Have you ever had those little jars of salmon flakes (鮭フレーク)? These fluffy, coral-colored bits can transform plain rice into something special with just a sprinkle. Each flake has just the right balance of savory and sweet, and it melts a bit when you put it on top of some steaming rice.

You can use it as a filling for rice balls, served over white rice, or as a topping for ochazuke (rice with green tea), hiyayakko, fried rice, and other dishes.

These salmon flakes bring instant comfort and flavor to the simplest of meals!

Homemade Japanese-style salmon flakes in a white ceramic pot with brown decorative spoon
Yuto headshot

How I Developed This Recipe


To be honest with you, the salmon flakes available at supermarkets in Japan are pretty tasty. However, I must say that homemade salmon flakes are even better.

In my recipe, I’ve achieved a perfect balance by incorporating mirin for a hint of sweetness, a combination of butter and soy sauce for depth, and a sprinkle of sesame seeds as a final touch.

These salmon flakes are ideal when served in onigiri or with white rice. I highly recommend trying it out at home. Enjoy!

Homemade Japanese-style salmon flakes in a white ceramic pot with brown decorative spoon next to a bowl of rice and small dish of green onions

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Homemade Salmon Flakes at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this Salmon Flakes recipe for a complete visual walkthrough!

STEP
Preparing the Salmon

First, let’s get our salmon fillets ready. Gently pat them with kitchen paper to soak up any extra moisture.

patting salmon fillets dry with kitchen paper
Tip from my reader

Most of the salmon fillets sold in Japan are on the lean side, but when one of my readers used fatty salmon, she had a hard time making flakes because of the fat. So, if you can, it’s better to use lean salmon. Thank you for your valuable feedback, Trish!

Sprinkle a generous pinch of salt over the fillets and let them sit for about 10 minutes. This longer resting time allows the salt to draw out more moisture containing fishy odor compounds through osmotic pressure.

two salmon fillets in a steel container

After 10 minutes, give the fillets another good pat with paper towels to soak up the accumulated liquid.

STEP
Cooking the Salmon

Next, fill a pot with enough water to cover the salmon fillets and bring it to a boil. Once it’s boiling, immediately turn down the heat to low so it’s just barely simmering. The gentle heat is key to preserving the salmon’s moisture and preventing it from becoming tough and dry.

Place the salmon in the water and let it simmer gently for about 5 minutes.

simmering salmon fllets in a pot of water

After 5 minutes, take the salmon out of the water and put them in a dish or bowl.

Why Gentle Cooking Works

High heat causes fish proteins to contract rapidly, squeezing out moisture and resulting in dry, tough salmon. The gentle simmering prevents this, keeping the salmon juicy.

Once the salmon has cooled just enough to handle, gently peel off the skin. The skin should separate easily at this stage.

Now, using a wooden spatula or chopsticks, gently break up the salmon along its natural muscle fibers. This creates those beautiful, tender flakes we’re looking for. A wooden tool applies just the right amount of pressure without mashing the fish.

breaking salmon fillets into flakes

Don’t worry if the salmon isn’t completely cooked in the center. It’s going to cook more later on.

Don’t throw the skin away!

I simply sprinkled salt and pepper, pan-fried them, and ate them as a little snack until the salmon flakes were ready.

Now’s a good time to check for pin bones. Even if the fillets are labeled “boneless,” there might still be some small bones left. Just run your fingers over the flaked salmon and use tweezers or fish bone pliers to get rid of any bones you find.

STEP
Frying the Salmon Flakes

Now it’s time to build the flavor. Heat a frying pan over low to medium-low heat.

Put a frying pan over low to medium-low heat and melt some butter. When the butter’s melted, mix in the salmon flakes, a splash of sake, a bit of mirin, and salt.

frying salmon flakes in a pan

Slowly cook it until the liquid is almost gone.

Visual Cues for Perfect Moisture

The most critical part of making perfect salmon flakes is achieving the right moisture level. Watch for these signs:

  • The salmon should look fluffy with small air pockets forming between the flakes
  • The mixture should still appear slightly moist but not wet
  • Just before the pan starts to show signs of browning at the edges
  • The flakes should move freely in the pan without sticking together

Remove from heat at precisely this stage – before the mixture becomes completely dry. The flakes will continue to dry slightly as they cool, so stopping slightly before they seem done ensures they’ll be perfectly moist when served.

seasoned salmon flakes in a pan

Just before removing from heat, gently fold in soy sauce and toasted sesame seeds, which add a wonderful nutty flavor and pleasing texture contrast to the soft salmon flakes.

STEP
Use or Store

If you want to store salmon flakes, allow the salmon flakes to cool completely before storing. Placing hot food in a covered container traps steam, which condenses and creates moisture droplets.

Place the salmon flakes in a clean container and once cooled, cover and refrigerate.

Japanese salmon flakes rice topping in a ceramic pot

Enjoy with a bowl or rice or use as a rice ball filling!

Jump to Full Recipe Measurements

Essential Tips & Tricks

  • Allow the salted salmon to rest for a full 10 minutes before cooking.
  • Never boil the salmon aggressively.
  • Remove pin bones after cooking when they’re easier to spot.
  • Watch for visual cues when drying the flakes – stop when salmon looks fluffy with small air pockets, while still slightly moist (not completely dry).
  • Cool salmon flakes completely before storing.

With these simple tips in mind, you’re set for success every time you make Salmon Flakes.

Homemade Japanese-style salmon flakes in a white ceramic pot close up with brown decorative spoon

Meal Prep & Storage

Salmon flakes are excellent for meal prep! This recipe is specifically designed to preserve salmon for multiple uses throughout the week.

  • Full Dish Prep: Make the complete salmon flakes recipe, cool thoroughly, and store in airtight containers in the refrigerator. Use within 5 days for optimal freshness.
  • Freezer Prep: Portion cooled salmon flakes into small freezer-safe containers or wrap individual servings in plastic wrap before placing in freezer bags. This makes it easy to grab just what you need for meals.
  • Make-Ahead Meals: Prepare onigiri (rice balls) with salmon flake filling, wrap individually, and freeze for quick grab-and-go lunches.

For storage, always use clean, sanitized containers with tight-fitting lids. Refrigerate salmon flakes as soon as they’ve cooled completely to room temperature. When stored properly, they’ll last up to 5 days in the refrigerator or up to 1 month in the freezer.

Always use clean utensils when serving to prevent contamination and extend shelf life.

Homemade Japanese-style salmon flakes on rice

FAQ

Here are answers to frequently asked questions I have received across all platforms, including here, YouTube, Instagram, and Pinterest. If you have any questions, feel free to send them to me anytime! It will be a big help for everyone in this community!

Can I use frozen salmon for this recipe?

Yes, you can use frozen salmon, but be sure to thaw it completely in the refrigerator overnight before preparing. Pat it thoroughly dry with paper towels after thawing, as frozen salmon often releases more moisture when thawed.

How spicy is this dish? Can I make it spicier?

These Japanese salmon flakes aren’t spicy at all. However, you can easily add heat by mixing in a pinch of shichimi togarashi (Japanese seven spice) or ichimi togarashi (ground red pepper).

Can I add other ingredients to the salmon flakes for variety?

Absolutely! Popular additions include finely chopped shiso (perilla) leaves, grated yuzu peel, toasted white sesame seeds, or a small amount of minced ginger. For a richer version, some people mix in a little bit of mayonnaise just before serving.

Why did my salmon flakes turn out too salty?

This could happen if you used pre-salted salmon (salted salmon) and then added more salt during cooking. When using salted salmon, skip the initial salting step and reduce additional salt when seasoning.

Homemade Japanese-style salmon flakes on rice topped with chopped green onion

I hope you enjoy this Homemade Salmon Flakes recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

Homemade Japanese-style salmon flakes in a white ceramic pot
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Japanese Seasoned Salmon Flakes

These succulent salmon flakes are delicately seasoned with Japanese condiments and are the perfect pairing for rice, especially rice balls!
Course Bento, Homemade Ingredients
Cuisine Japanese
Method Pan fry
Duration 15 minutes or less
Diet Egg Free, Pescatarian
Prep Time 10 minutes
Cook Time 10 minutes
Total Time 20 minutes
Servings 6 servings
Calories 61kcal
Author Yuto Omura

Ingredients

  • Salmon2 salmon fillets (lean fillets), approximately 100g per fillet
  • salt½ tsp salt to draw out moisture
  •  
    1 tsp butter
  • Ingredient sake½ tbsp sake
  • ½ tbsp mirin
  • salt tsp salt to season
  • bottles of Japanese soy sauce on a white background¼ tsp Japanese soy sauce (koikuchi shoyu)
  • 1 tsp toasted white sesame seeds

Instructions

  • Pat the surface of 2 salmon fillets dry with kitchen paper. Rub ½ tsp salt on both sides and rest for 10 minutes. While you wait, start boiling a pot of water.
    two salmon fillets in a steel container
  • After 10 minutes, the salt will have drawn out the excess moisture, so pat dry once more.
    patting salmon fillets dry with kitchen paper
  • Once the water is boiling, turn the heat down to a simmer and add the salmon. Simmer for 5 minutes.
    simmering salmon fllets in a pot of water
  • Take the salmon out of the pan and gently shake off the excess water. Transfer it to a container and carefully pull off the skin (you can fry this and eat it as a snack, or discard). Use a spatula to break it up and remove any bones with tweezers.
    breaking salmon fillets into flakes
  • Heat a frying pan on low to medium-low and add 1 tsp butter. Once melted, add the salmon flakes along with ½ tbsp sake, ½ tbsp mirin and ⅛ tsp salt. Mix well and continue to heat until the liquid has almost gone.
    frying salmon flakes in a pan
  • Turn off the heat, and mix in ¼ tsp Japanese soy sauce (koikuchi shoyu) and 1 tsp toasted white sesame seeds.
    seasoned salmon flakes in a pan
  • Use straight away or transfer to a clean container and leave to cool. Once cool to the touch, cover and store in the fridge for up to 5 days.
    Japanese salmon flakes rice topping in a ceramic pot
  • Enjoy with rice!

Video

Notes

  • Look for visual cues when cooking – stop when salmon looks fluffy with small air pockets while still slightly moist, not completely dry.
  • Store in clean containers and always use fresh utensils when serving.
  • Store cooled salmon flakes in airtight containers for up to 5 days in the refrigerator or freeze in individual portions for up to 1 month.
  • These flakes are great for adding to freshly cooked Japanese rice, rice balls, hiyayakko, or fried rice!

Nutrition

Calories: 61kcal | Carbohydrates: 1g | Protein: 7g | Fat: 3g | Saturated Fat: 1g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Trans Fat: 0.03g | Cholesterol: 20mg | Sodium: 272mg | Potassium: 166mg | Fiber: 0.04g | Sugar: 0.3g | Vitamin A: 34IU | Calcium: 8mg | Iron: 0.3mg

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Kombu Onigiri (Simmered Kelp “Tsukudani” Rice Ball) https://sudachirecipes.com/kombu-onigiri-recipe/ https://sudachirecipes.com/kombu-onigiri-recipe/#comments Sat, 26 Jun 2021 03:32:08 +0000 http://sudachirecipes.com/?p=4494 Have you ever wondered if you can use your leftover kombu after making dashi? Well, the answer is you can! You won't believe how delicious kombu itself can be until you try this recipe. This umami-packed simmered kelp called "Tsukudani" is one of Japan's most popular onigiri fillings!

The post Kombu Onigiri (Simmered Kelp “Tsukudani” Rice Ball) appeared first on Sudachi.

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Featured Comment:

“This recipe nails the flavor perfectly, and it can be made with ingredients that are not too hard to find (or that can be ordered online). I’ve made it several times now, most recently in a bigger quantity. It keeps quite well in the fridge. You are a lifesaver. Thank you!”

– Kiki

What is Kombu Onigiri?

Kombu rice balls are prepared by simmering used kelp (after making dashi) with soy sauce and mirin to create “tsukudani,” which is then wrapped in rice balls.

Because tsukudani has a rich, sweet, and savory flavor, combining it with plain Japanese white rice creates the perfect balance. This makes it an ideal topping for a bowl of rice and a delicious filling for rice balls.

This recipe is an excellent way to use up “rehydrated kombu” (kelp) making it a valuable addition to your cooking repertoire.

tsukudani and dry kombu
Yuto headshot

How I Developed This Recipe


My goal was simple: to create the perfect kombu rice ball recipe that would capture the true taste.

The recipe is a nod to tradition and a celebration of sustainability. Instead of throwing away the used kombu after making dashi, why not put it to good use in a tasty rice ball?

It’s a tasty mix of flavors and a great example of how to make the most of ingredients.

two kombu onigiri on a slate plate

Ingredients & Substitution Ideas

kombu onigiri rice ball ingredients on a white background with labels
  • Cooked Japanese Short-Grain Rice: For those authentic Japanese rice balls, you’ve got to use short-grain Japanese rice. If you’re in the U.S. and wondering which brand to pick and how to cook it right, my How to Cook Japanese Rice Recipe has all the answers.
  • Sushi Nori Seaweeds: These are perfect for wrapping up your rice balls. While you could leave them out, to me, onigiri isn’t complete without that signature nori wrap.
  • Rehydrated Kelp (Kombu): This recipe calls for kelp that’s been rehydrated after making broth, not the dried state. If you’re new to kelp or need a refresher on making kelp dashi, my Kombu 101 article is packed with tips and recommendations.
  • Tsukudani Condiments: To simmer the kombu and create that rich tsukudani flavor, I use a mix of sake, rice vinegar, brown sugar, mirin, soy sauce, and a sprinkle of white sesame seeds.
Jump to Full Recipe Measurements
two kombu onigiri on a slate plate

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Kombu Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this recipe for a complete visual walkthrough!

STEP
Make Tsukudani
rehydrated kombu cut into matchsticks (julienned) in a glass bowl

Slice rehydrated kombu into thin, elegant strips, about 3mm or roughly 1/10 inch thick.

simmering kombu in water

Combine the kombu strips, water, sake, and rice vinegar in a pan. This combination of ingredients helps soften the kombu.

Bring the mixture to a lively boil over medium heat. Once it’s bubbling away, reduce the heat and let it simmer. You’ll want the water to reduce to just under half its original volume, which should take around 20 minutes.

STEP
Extra Flavor
simmering kombu with water and condiments

Stir in light brown sugar, mirin, and soy sauce.

Turn the heat to medium and boil until the liquid is all gone. Remember to stir frequently to prevent any burning.

Adjust the softness

If the kombu is still too hard even after reducing all the liquid and condiments, add more water, 100ml at a time, and simmer it until the liquid is gone.

Make sure to mix it often to ensure even cooking. Repeat the process until the texture of the kombu is softened to your liking.

reduced kombu tsukudani with sesame seeds in a pan

Once you have a thick, sticky, dark mixture, sprinkle in white sesame seeds and give it a good mix.

STEP
Shape & Wrap

Sprinkle your hands (or onigiri mold) with a light dusting of salt and take a handful of rice. Gently flatten it out, place the kelp tsukudani in the center and fold the rice over until the filling is encased in the middle. If using a mold, simply add half of the rice, the tsukudani and then the other half. Gently press the top of the mold down to form your rice ball.

rice in an onigiri (rice ball) mold with kombu tsukudani in the center

I used an onigiri mold like this one, but it’s also easy to shape by hand by shaping the rice into a rounded triangle shape.

Different Ways to Shape Onigiri

Shaping an onigiri rice ball can be done using several methods. You can use cold and wet hands, wrap them in plastic, or use a mold. Regardless of the method you choose, the most important aspect is to press the rice down firmly to maintain its shape.

In conclusion, shaping an onigiri requires practice. In my post titled “3 ways to shape the perfect onigiri rice ball“, you can learn more about each method for shaping an onigiri.

a hand holding kombu onigiri wrapped with nori

Enjoy!

Jump to Full Recipe Measurements

How to Store

For the best taste, rice balls should be consumed fresh and are not suitable for storing at room temperature or in the refrigerator. However, if you want to store them, I recommend freezing them.

To do this, wrap them in plastic (without nori) while still warm and place them in a freezer bag once they have cooled down to room temperature. The shelf life of frozen onigiri is about one month, but the quality will diminish over time. It’s best to consume them within two weeks for optimal taste. Defrost in the microwave for best results.

If you have any leftover kombu tsukudani, you can keep it in a sealed container in the fridge for 1-2 weeks and use it as a rice topping or for future onigiri.

kombu onigiri in hand

I hope you enjoy this Kombu Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

More Japanese Rice Ball Recipes

kombu onigiri thumbnail
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Kombu Onigiri (Kelp “Tsukudani” Rice Ball)

Have you ever wondered if you can use your leftover kombu after making dashi? Well, the answer is you can! You won't believe how delicious kombu itself can be until you try this recipe. This umami-packed simmered kelp called "Tsukudani" is one of Japan's most popular onigiri fillings!
Course Bento, Lunch, Snacks
Cuisine Japanese
Method Simmer
Duration 1 hour
Diet Dairy Free, Egg Free, Pescatarian, Vegan, Vegetarian
Prep Time 10 minutes
Cook Time 40 minutes
Total Time 50 minutes
Servings 6 rice balls
Calories 166kcal
Author Yuto Omura

Equipment

Ingredients

For making the onigiri

  • Ingredient cooked japanese rice600 g cooked Japanese short-grain rice
  • salt2 tsp salt
  • Ingredient nori6 pieces roasted seaweed for sushi (nori) cut to rice ball size, 1 sheet of sushi nori will be enough for approx 4 onigiri

Instructions

  • Before starting, make sure your kombu is already rehydrated. It needs to soak for at least 1 hour before making tsukudani, and the leftover liquid can be used as kombu dashi
    kombu mizu dashi step 2
  • You can cook the rice while the tsukudani is simmering. Use Japanese short grain white rice or sushi rice. The rice needs to be sticky so that it holds it shape. Use a rice cooker or check out my how to cook Japanese rice on the stove recipe.
    mixing rice in a black cooking pot with rice paddle

Making Kombu Tsukudani

  • Cut 50 g rehydrated kombu into thin strips. (About 3mm or 1/10 inch thick)
    rehydrated kombu cut into matchsticks (julienned) in a glass bowl
  • Add the sliced kombu to a pan with 500 ml water, 2 tbsp sake and 1 tsp rice vinegar.
    Bring to a rolling boil over a medium heat, then lower the heat and simmer until the water has reduced to a little less than half. This should take approximately 20 minutes.
    simmering kombu in water
  • Add 1 tbsp light brown sugar, 1 tbsp mirin and 2 tbsp Japanese soy sauce (koikuchi shoyu). Mix well and increase the heat back to medium.
    simmering kombu with water and condiments
  • Continue to boil until the liquid is completely reduced, mix often to prevent burning. Once thick, sticky and dark, sprinkle in ½ tbsp toasted white sesame seeds and mix well. 
    reduced kombu tsukudani with sesame seeds in a pan

Shaping Onigiri

  • Sprinkle salt over your rice ball mold (or slightly dampened hands) and shape your rice. Place 1-2 tsp of the kombu tsukudani in the center and encase.
    rice in an onigiri (rice ball) mold with kombu tsukudani in the center
  • For more details on how to shape onigiri by hand, check out my 3 ways to shape perfect onigiri post.
    shaping onigiri rice ball by hand
  • Wrap the onigiri with a sheet of nori and enjoy! You can also place the kombu tsukudani on top of the rice ball for decoration.
    a hand holding kombu onigiri wrapped with nori

Video

Notes

  • If the kombu is too hard after reducing all the liquid and condiments, add more water (100ml at a time) and simmer until the liquid is gone and mix often to ensure even cooking. Repeat until texture is softened to your liking.
  • Any leftover kombu tsukudani should be stored in the fridge and used within 2-3 weeks. The rice balls themselves can be wrapped in plastic wrap and stored in the freezer for up to 1 month. Store without nori and defrost in the microwave. Refrigeration is not recommended for rice balls.

Nutrition

Calories: 166kcal | Carbohydrates: 33g | Protein: 4g | Fat: 1g | Saturated Fat: 0.1g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 0.2g | Sodium: 1097mg | Potassium: 119mg | Fiber: 1g | Sugar: 3g | Vitamin A: 25IU | Vitamin C: 1mg | Calcium: 44mg | Iron: 1mg

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3 Ways to Shape a Perfect Onigiri (Japanese Rice Ball) https://sudachirecipes.com/how-to-shape-onigiri/ https://sudachirecipes.com/how-to-shape-onigiri/#respond Thu, 24 Jun 2021 23:05:14 +0000 http://sudachirecipes.com/?p=4498 Onigiri is a Japanese rice ball that comes in many different flavors. It's tasty, filling, and great for on-the-go. If you want to try making your very own onigiri but don't know where to start, you're in the right place. Here I will share everything you need to know about Japanese onigiri!

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Disclaimer: This post may contain Amazon affiliate links. Sudachi earns a small percentage from qualifying purchases at no extra cost to you. See disclaimer for more info.

What is Onigiri?

An onigiri is essentially a rice ball made from sticky Japanese short-grain white rice, which is the same type of rice used to make sushi. The most common shape for onigiri is a triangle with rounded corners, although they can also be made completely round.

It is believed to have originated during the Heian period (794-1185). Since then, it has been highly valued for its ease and convenience as it does not require a plate, making it a popular choice for portable food during the Sengoku (war states) period (1467-1615).

Three salted onigiri rice balls on a round slate plate

Just like a sandwich, onigiri is customizable and the variety of fillings and flavor options are endless! Here are the most common ways to add flavor to rice balls:

  1. Salt: The most basic onigiri of all – salt. And it’s one of the most popular types too! The salt helps preserve the rice and adds a simple yet great flavor.
  2. Mixing: Ingredients can be incorporated into the rice before shaping, such as salmon or soboro chicken. It might sound simple, but if the ingredients are too wet or greasy, the rice may lose its stickiness and the onigiri may not hold its shape so caution is needed.
  3. Filling: For a central flavor surprise, try fillings like tuna mayo or kombu tsukudani. Filling works best with ingredients with a lot of moisture.
  4. Cooking: Flavors can be intensified by cooking rice with ingredients like meats or using stock instead of water. I often make rice balls using leftover Takikomi Gohan for example!
  5. Frying: For a crispy twist, there’s yaki onigiri which is pan-fried after it’s been shaped.

With these methods, onigiri offers a taste experience for everyone.

a hand holding devil's onigiri
A fan favorite, Devil’s Onigiri (with seasoned tempura flakes and aonori)

Best Rice to Use for Onigiri

Onigiri is nearly always made with Japanese short-grain white rice. This type of rice has a sticky texture, making it easy to shape into rice balls that hold together without falling apart. It is also a popular staple in Japanese cuisine that is consumed almost daily.

If you want to know my recommended rice brands in the US and how to cook Japanese short-grain rice on the stove, check out my Japanese rice recipe.

Cooked Japanese short-grain white rice in a black cooking pot

If you prefer to use brown rice, you will need to find Japanese short-grain brown rice. It has the same sticky texture as the white variety, but it requires extra soaking time and can be difficult to find.

It’s important to note that regular long-grain brown rice cannot be used to make onigiri as the grains do not stick together, causing it to fall apart.

We usually cook the rice in a rice cooker, but if you don’t have one, check out my post on how to cook Japanese-style rice on the stove.

two onigiri on a wooden platform

How to Shape by Hand

The simplest way to make onigiri is using your hands. Here are some pros to making onigiri by hand.

  • No need for extra equipment
  • No waste (good for the environment)
  • Easy to make different sizes
STEP
Prepare shaping station

Begin by laying out all your essentials. You’ll need your freshly cooked rice, a bowl filled with ice-cold water, and a small dish of salt.

If you’re adding extra ingredients, they should be ready and nearby too. Having everything within arm’s reach makes the process smoother.

a bowl of cooked white Japanese rice next to a bowl of ice water and a small plate of salt
STEP
Wet your hands

First, give your hands a thorough wash.

Once they’re clean, immerse them in the icy water for a good 15-20 seconds.

This not only chills your hands but also prevents the rice from sticking too much.

two hands submerged in a steel bowl filled with water and ice
STEP
Salt your hands

Sprinkle about 2 pinches of salt over your palms. This adds a subtle flavor to the onigiri and also acts as a preservative.

two hands rubbing palms with salt
STEP
Fill Rice (optional)

Pick up a handful of rice. If you want all of your rice balls to be the same size, I recommend dividing the rice equally first.

If you’re adding a filling, here’s a tip: flatten the rice on your palm, create a small well in the center using your fingers, and then add your chosen filling. Fold the rice over the filling, ensuring it’s snugly encased.

adding filling to onigiri
STEP
Shape

Cup your hand slightly and press the rice into your folded palm. Rotate the rice ball and press again to create three edges. Continue to press and turn until you have a firm rice ball that holds its shape beautifully.

gif to show how to shape onigiri (rice ball) by hand

If you want to learn in action, check out my video below!

How to Shape with Plastic Wrap

Shaping an onigiri using plastic wrap is a common method in Japan. You can also use the same plastic wrap to wrap it up and put it in a lunchbox and keep it intact.

Here are a few benefits of shaping with plastic wrap.

  • Mess-free
  • Hygienic
  • You can re-use the plastic and wrap it for later
STEP
Season the plastic wrap

Start by tearing off a piece of plastic wrap and laying it flat on your countertop or table.

Lightly sprinkle 2 pinches of salt across the plastic wrap to season your rice as you shape. Then, place your rice right in the center.

Salting plastic wrap in preparation to shape onigiri

STEP
Add the rice

Place the rice in the center of the plastic wrap. If you are adding filling, spread the rice out flat, make a dent in the middle and place the filling in the dent. Fold the rice over to encase the filling before you begin to shape the onigiri.

Placing rice onto the plastic wrap to shape into onigiri
STEP
Shape

Lift the edges of the plastic wrap to envelop the rice. With the rice securely wrapped, cup your hand and gently press the rice into your folded palm.

Rotate the wrapped rice ball and give it another gentle press. After forming three edges, continue pressing and turning until you have a firm, beautifully shaped onigiri.

Shaping onigiri with plastic wrap

How to Use Onigiri Molds

If you’re not confident in your onigiri shaping skills, I have some options here for you! Here I will explain how to use onigiri molds.

Plastic Molds

Plastic onigiri molds usually come in two or three sizes and are especially great for when you’re adding fillings. I bought mine at Daiso (Japanese dollar store) but you can find them on Amazon here.

Plastic onigiri rice ball molds

Here are a few pros for using plastic molds.

  • Fast
  • Hygienic
  • More consistent shape and size
  • Different shapes for fun bentos
STEP
Season the rice

Begin by mixing a few pinches of salt into the rice. This ensures every bite of your onigiri is lightly seasoned.

mixing cooked rice
STEP
Fill the mold

Gently press the rice into your mold. Make sure to fill it up right to the top. If you don’t add enough rice, the end result will easily fall apart.

At the same time, don’t pack too much, as this will make the rice ball too dense.

Filling plastic onigiri mold with rice
Adding a filling?

For those who love a surprise in the middle, add half the rice and press it down lightly. Make a dent and nestle your chosen filling in the center, then top off with the remaining rice.

STEP
Seal

Place the lid over the mold and press down firmly. This will ensure the onigiri is stable and less likely to fall apart.

Pressing the lid of the onigiri mold
STEP
Remove

Remove the rice ball from the mold by pushing down the tab at the back. Pull the mold away and the perfectly shaped onigiri will pop right out!

Pressing the tab of the onigiri mold
Onigiri rice ball shaped with plastic mold

Wooden Mold

A bit more old-fashioned but a lot sturdier is the traditional Japanese wooden onigiri mold.

I bought the one in the picture below in a hardware store in Japan, and you can find them on Amazon.

wooden onigiri mold

The pros to using a wooden mold are:

  • Fast
  • Consistent shape
  • Wooden molds are sturdy and long-lasting

There are usually multiple slots so that you can make more than one onigiri at a time too!

STEP
Soak the Mold

Begin by soaking the wooden mold in warm water for about 5-10 minutes. This simple step ensures the rice won’t stick, making the process smoother.

Soaking wooden onigiri mold in water
STEP
Season the Rice

Before shaping, mix salt into the rice. This not only seasons your onigiri but also enhances its overall flavor.

Mixing salt and rice
STEP
Shape and fill

Gently press the rice into the mold’s slots, ensuring you push it well into the corners for a perfect shape.

pushing rice into a wooden onigiri mold
Tip

If you’re adding fillings, fill the mold halfway and make an indent in the middle with your fingers. Place the filling in the dent and then top with the other half of the rice to cover the filling.

STEP
Release

Flip the mold over, press the onigiri firmly down and pull the mold up and away. Make sure to wet your thumbs with a little water before pressing, this will stop the rice from sticking.

How to Store

Once the onigiri is formed, it is best to eat it as soon as possible to prevent it from drying out. If you plan to eat it within a few hours, wrap with plastic wrap and keep it in a lunchbox with an ice pack.

Refrigerating onigiri is not recommended since it will cause the rice to become dry and hard. If you wish to prepare onigiri in advance, the best method is freezing (depending on the filling).

To freeze, wrap each onigiri individually without nori, then store them in a freezable container or freezer bag to protect them from frost. Frozen onigiri can be stored for 2-3 weeks (depending on the filling). To defrost, microwaving until warmed through is the best method.

Storage Summary

Room temperature – A few hours with an ice pack.

Refrigerated – Not recommended.

Frozen – 2-3 weeks, depending on filling.

3 okaka onigiri (seasoned bonito flake rice balls) lined up on a dark brown rectangular plate on a wooden background

I hope you enjoy making rice balls using these tips! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments belowThank you!

how to shape onigiri thumbnail
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3 Ways to Shape Onigiri (Japanese Rice Balls)

Onigiri is a Japanese rice ball that comes in many different flavors. It's tasty, filling, and great for on-the-go. If you want to try making your very own onigiri but don't know where to start, you're in the right place. Here I will share everything you need to know about Japanese onigiri!
Course Snacks
Cuisine Japanese
Duration 15 minutes or less
Diet Dairy Free, Egg Free, Gluten-Free, Pescatarian, Vegan, Vegetarian
Prep Time 5 minutes
Total Time 5 minutes
Servings 4 Onigiri
Calories 100kcal
Author Yuto Omura

Equipment

Ingredients

Instructions

How to Shape Onigiri by Hand

  • Prepare your shaping station with 300 g cooked Japanese short-grain rice (warm), a small bowl of salt and a large bowl of ice cold water.
    a bowl of cooked white Japanese rice next to a bowl of ice water and a small plate of salt
  • Wash your hands and hold them in the ice cold water for 15-20 seconds. Remove them from the water but do not dry them.
    two hands submerged in a steel bowl filled with water and ice
  • Sprinkle a few pinches of salt over your palms and rub your hands together to spread it evenly.
    two hands rubbing palms with salt
  • Pick up a handful of cooked rice. If you're making onigiri with a filling, flatten the rice, make a dent in the middle and add the fillings of your choice. Then fold the rice over to encase the filling.
    how to add filling to onigiri
  • Shape by pressing and turning to form three edges. Repeat until the onigiri feels stable.
    shaping a salted onigiri by hand
  • Wrap with roasted seaweed for sushi (nori) and enjoy!
    a hand holding kombu onigiri wrapped with nori

How to Shape Onigiri with Plastic Wrap

  • Break off a piece of plastic wrap and place it on a flat surface. Lightly sprinkle with salt.
    Salting plastic wrap in preparation to shape onigiri
  • Place the rice in the center of the plastic wrap. If adding a filling, fold the plastic wrap over the rice and flatten it with your palm, then make a dent in the middle. Peel back the plastic wrap, and use it to fold the rice over before shaping.
    Placing rice onto the plastic wrap to shape into onigiri
  • Wrap the rice and shape by pressing and turning to form a triangle.
    Shaping onigiri with plastic wrap

How to Shape Onigiri with a Plastic Mold

  • Mix 300 g cooked Japanese short-grain rice with a few pinches of salt.
    Mixing salt and rice
  • Add the rice to the mold. If adding a filling, fill the mold half way and make a dent. Add the filling and then add the other half of the rice on top. Fill the mold to the top but don't pack too much.
    Filling plastic onigiri mold with rice
  • Press the lid on top and push the rice down.
    Pressing the lid of the onigiri mold
  • Remove the lid and turn the mold over. Push the tab and lift the mold up to release the onigiri.
    Pressing the tab of the onigiri mold
  • Wrap with roasted seaweed for sushi (nori) and enjoy!
    Onigiri rice ball shaped with plastic mold

Video

Nutrition

Calories: 100kcal | Carbohydrates: 22g | Protein: 2g | Fat: 0.3g | Saturated Fat: 0.1g | Polyunsaturated Fat: 0.1g | Monounsaturated Fat: 0.1g | Sodium: 148mg | Potassium: 70mg | Fiber: 1g | Sugar: 0.1g | Vitamin A: 11IU | Vitamin C: 0.3mg | Calcium: 14mg | Iron: 1mg

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Okaka Onigiri (Seasoned Bonito Flakes Rice Ball) https://sudachirecipes.com/okaka-onigiri-with-bonito-flakes-recipe/ https://sudachirecipes.com/okaka-onigiri-with-bonito-flakes-recipe/#comments Mon, 11 Jan 2021 08:58:10 +0000 http://sudachirecipes.com/?p=2072 Okaka onigiri is a classic Japanese rice ball flavored with seasoned bonito flakes. It tastes delicious and it's super quick and easy to make with just 5 ingredients!

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Featured Comment:

“So good! I’ll be making these again!”

– Heather

What is Okaka Onigiri?

Okaka is a type of rice seasoning made from bonito flakes, known in Japanese as “katsuobushi“. Katsuobushi are thin shavings of skipjack tuna that have been fermented and smoked, giving them a strong smokey, and slightly fishy flavor. It is most commonly used to make dashi, which is an essential ingredient in Japanese cuisine.

The simplest way to make Okaka is by mixing the bonito flakes with soy sauce, which gives it a salty and savory flavor that is packed with umami. More complex versions of okaka include ingredients such as sake and mirin, and some are pan-fried to burn off the alcohol in these condiments and remove the excess moisture.

Okaka is easy to make, tastes delicious, and uses Japanese pantry items with a long shelf-life making it a quick and convenient recipe to make at home!

3 okaka onigiri (seasoned bonito flake rice balls) lined up on a dark brown rectangular plate on a wooden background

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Okaka Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this recipe for a complete visual walkthrough!

STEP
Mix okaka ingredients

Add the bonito flakes, soy sauce, sesame seeds, toasted sesame oil, sugar, and dashi granules to a large bowl and mix until all of the bonito flakes are saturated.

okaka onigiri rice ball "filling" in a steel mixing bowl with a wooden spoon
STEP
Add the rice

Add the cooked Japanese rice to the bowl and mix until the okaka is evenly distributed.

(If you prefer, you can place the okaka in the middle instead of mixing it. This is down to preference.)

okaka onigiri filling mixed with white rice in a steel mixing bowl with wooden spoon
STEP
Shape

If you are shaping the rice by hand, set a bowl of ice-cold water next to you and wet your hands before shaping. This will stop the rice from sticking. Alternatively, you can use plastic wrap or a rice ball mold if you prefer not to handle the rice.

For more information on how to shape onigiri, check out my 3 Ways to Shape a Perfect Onigiri article.

okaka onigiri shaped in a plastic rice ball mold

If you’re using a mold, make sure to fill it right to the top so that when you push the lid down, there is some resistance. This will ensure your rice ball won’t fall apart when taken out of the mold.

okaka onigiri shaped in a plastic rice ball mold
STEP
Serve

Wrap with nori and enjoy!

holding okaka onigiri wrapped with nori
Jump to Full Recipe Measurements

How to Store

Rice balls are best eaten when they are freshly made and still warm (although this depends on preference). Since Okaka doesn’t use fresh ingredients, it’s ideal for bento boxes or as a snack. I would still recommend storing Okaka Onigiri with an ice pack if you don’t plan to eat it within a few hours.

Refrigeration is not recommended as it can cause the rice to dry out and become hard. If you have leftovers, wrap each rice ball (without nori) in plastic wrap and store them in the freezer. Microwave to thaw and wrap the nori right before eating. Okaka Onigiri can be frozen for about 1 month.

Storage Summary

Room temperature – Several hours with an ice pack.

Refrigerated – Not recommended.

Frozen – Up to 1 month.

okaka onigiri held in a hand

FAQ

What is katsuobushi?

Katsuobushi are thin shavings of smoked and fermented skipjack tuna. They are known as “bonito flakes” in English and are an essential ingredient used to make dashi in Japanese cuisine.

What kind of rice should I use to make rice balls?

Rice balls should be made with short-grain Japanese rice (sometimes known as sushi rice), which is known for its slightly sticky texture. Using other kinds of rice is not recommended since the rice ball won’t hold its shape.

If I wrap it in plastic wrap and store it in the freezer, how long will it keep? And how do I reheat it?

You can freeze onigiri for up to 1 month when properly wrapped in plastic wrap. To reheat, remove the plastic wrap and microwave until heated through (typically 1-2 minutes depending on your microwave’s wattage and the size of the rice ball).

Is nori (seaweed) essential?

Nori is optional and not essential for okaka onigiri. While it adds a nice texture and makes the rice ball easier to hold, the filling itself is flavorful enough to enjoy without seaweed. If you do use nori, wrap it just before eating to maintain its crispness.

3 okaka onigiri (seasoned bonito flake rice balls) lined up on a dark brown rectangular plate on a wooden background

I hope you enjoy this Okaka Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

3 okaka onigiri (seasoned bonito flake rice balls) lined up on a dark brown rectangular plate on a wooden background
Print

Okaka Onigiri (Seasoned Bonito Flake Rice Ball)

Okaka onigiri is a classic Japanese rice ball made with seasoned bonito flakes. It's quick to make, uses simple Japanese pantry ingredients, and tastes delicious!
Course Bento, Breakfast, Lunch, Snacks
Cuisine Japanese
Duration 15 minutes or less
Diet Dairy Free, Egg Free, Pescatarian
Prep Time 10 minutes
Cook Time 5 minutes
Total Time 15 minutes
Servings 6 rice balls
Calories 164kcal
Author Yuto Omura

Ingredients

Instructions

  • Add 15 g bonito flakes (katsuobushi), 1 ½ tbsp Japanese soy sauce (koikuchi shoyu), ½ tbsp toasted sesame oil, 1 tbsp toasted white sesame seeds, ½ tsp sugar, and ¼ tsp dashi granules to a large bowl and mix until well combined.
    okaka onigiri rice ball "filling" in a steel mixing bowl with a wooden spoon
  • Once all the liquid is absorbed, add 600 g cooked Japanese short-grain rice to the bowl and mix until all of the ingredients are spread evenly through the rice.
    okaka onigiri filling mixed with white rice in a steel mixing bowl with wooden spoon
  • Divide the rice into equal portions (depending on how big you want the onigiri to be, 600g of rice makes 4 large or 6 small rice balls) and shape using your preferred method. Wet your palms if you choose to shape by hand, this will stop the rice from sticking.
    okaka onigiri shaped in a plastic rice ball mold
  • Wrap with nori and enjoy!
    holding okaka onigiri wrapped with nori

Video

Notes

  • If you prefer not to handle the rice with your bare hands, you can wrap the rice with plastic wrap and shape it without touching it.
  • Leftover rice balls are best wrapped and stored in the freezer without nori. Microwave to defrost and eat as soon as possible.

Nutrition

Calories: 164kcal | Carbohydrates: 30g | Protein: 5g | Fat: 2g | Saturated Fat: 0.3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Cholesterol: 2mg | Sodium: 242mg | Potassium: 130mg | Fiber: 1g | Sugar: 0.4g | Vitamin A: 15IU | Vitamin C: 0.3mg | Calcium: 32mg | Iron: 1mg

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Devil’s Onigiri Copycat Recipe (Lawson Akuma no Onigiri) https://sudachirecipes.com/lawson-style-devils-onigiri-recipe/ https://sudachirecipes.com/lawson-style-devils-onigiri-recipe/#comments Mon, 11 Jan 2021 07:36:17 +0000 http://sudachirecipes.com/?p=2055 Looking for a quick lunch that is easy to make yet addictively delicious? This Devil's Onigiri is a recreation of a famous rice ball sold at the convenience store chain "Lawson." It's so simple, yet so good!

The post Devil’s Onigiri Copycat Recipe (Lawson Akuma no Onigiri) appeared first on Sudachi.

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Featured Comment:

“Tried these the other day, they were so delicious they got devoured within a few minutes, so I had to make it again and triple the recipe. Since then I can’t stop making your recipes! Thank you!”

– @niidzumakun8170 (from YouTube)

What is Devil’s Onigiri (Akuma no Onigiri)?

Onigiri is a popular lunch box dish that translates to “rice ball” in English. These rice balls are usually shaped as rounded triangles but can also be spherical or cylindrical.

Devil’s Onigiri is a unique type of rice ball sold exclusively at the Japanese convenience store, “Lawson.” The name is a direct translation of “Akuma no Onigiri” (悪魔のおにぎり) in Japanese.

It was introduced in 2018 and quickly became a hit, with 200,000 units sold in the first four weeks alone. This rice ball is known for its rich flavor and is said to be “devilishly delicious” and “devilishly addictive.”

It is also known for being high in calories. The “devil” label is commonly used in the names of various dishes that are considered a naughty treat.

two devil's onigiris made with tempura flakes and aonori on a gray plate with a brown border
Yuto headshot

How I Developed This Recipe


I wanted to make this devil’s rice ball recipe as close as possible to the iconic taste of Lawson’s Akuma no Onigiri.

As a tribute to this much-loved konbini food, I made sure that every stage of the recipe development process was guided by a commitment to authenticity.

I bought the real thing from Lawson’s a bunch of times. This side-by-side comparison makes sure that this copycat recipe not only has the same flavors as the original but also makes it easier for people to make at home.

Why Is There Tanuki On The Package?

Have you noticed the unusual character on the front of the Devil’s Onigiri packaging? Akuma de Tanuki Kun is a Japanese “tanuki” raccoon dog with bat wings and devil’s horns.

You might think it’s random, but Japanese characters usually have some meaning behind them.

Lawson's Devil Onigiri "Akuma no Onigiri"

Did you know that there are two famous Japanese dishes with “tanuki” in their names? They are Tanuki Udon and Tanuki Soba. These are noodle dishes topped with tempura flakes.

Without a doubt, the main ingredient for Devil’s Onigiri is also tempura flakes, and that’s why a tanuki raccoon dog became the mascot for this onigiri!

a hand holding devil's onigiri close up

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Devil’s Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this rice ball recipe for a complete visual walkthrough!

STEP
Preparation
tempura flakes, aonori and tsuyu sauce in a mixing bowl

In a large mixing bowl, combine the tempura flakes, aonori powder, soy sauce, sugar, dashi granules, toasted sesame oil and chicken bouillon powder. Stir until all the liquid is absorbed.

tenkasu and aonori mixed with tsuyu sauce in a bowl

Don’t worry if tenkasu loses its crispiness, as it’s supposed to be a little soft by the end.

STEP
Mix the Rice
cooked rice mixed with tenkasu, aonori and tsuyu sauce

Introduce the cooked Japanese short-grain rice to the mixture. Mix thoroughly, ensuring the ingredients are evenly distributed throughout the rice.

Tip

Divide the seasoned rice into equal portions before shaping to ensure they are all the same size! My recipe makes 4 based on the size of my relatively small rice ball mold, so you can make them bigger or smaller depending on preference.

STEP
Shaping
devil's onigiri mixture in a plastic rice ball mold

I really recommend using a rice ball mold for this, as the rice is oily and hard to shape by hand.

Different Ways to Shape Onigiri

Shaping an onigiri rice ball can be done using several methods. You can use cold and wet hands, wrap them in plastic, or use a mold. Whatever your chosen method, pressing the rice down firmly is essential for it to maintain its shape.

In conclusion, shaping an onigiri requires practice. In my post titled “3 ways to shape the perfect onigiri rice ball“, you can learn more about each method for shaping an onigiri.

STEP
Serve
a hand holding up devil's onigiri with a white background

Enjoy as a snack or on-the-go breakfast! Alternatively, store using the instructions below.

Jump to Full Recipe Measurements
devil's onigiri made with tempura flakes and aonori on a gray plate with a brown border next to a bowl of aonori and tenkasu

I hope you enjoy this Devil’s Onigiri copycat recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

More Copycat Recipes

Hungry for more? Explore my copycat recipe collection to find your next favorite dishes!

devil's onigiri made with tempura flakes and aonori on a gray plate with a brown border
Print

Devil’s Onigiri Copycat Recipe (Lawson Akuma no Onigiri)

Looking for a quick lunch that is easy to make yet addictively delicious? This Devil's Onigiri is a recreation of a famous rice ball sold at the convenience store chain "Lawson." It's so simple, yet so good!
Course Bento, Lunch, Snacks
Cuisine Japanese
Duration 15 minutes or less
Diet Dairy Free, Egg Free, Pescatarian
Prep Time 10 minutes
Cook Time 5 minutes
Total Time 15 minutes
Servings 4 rice balls
Calories 125kcal
Author Yuto Omura

Ingredients

Instructions

  • Add 5 tbsp tempura flakes (tenkasu), 1 tbsp aonori (dried green seaweed powder), 1 tbsp Japanese soy sauce (koikuchi shoyu), ½ tsp sugar, ¼ tsp dashi granules, ¼ tsp toasted sesame oil, and ¼ tsp Chinese-style chicken bouillon powder to a large bowl.
    tempura flakes, aonori and tsuyu sauce in a mixing bowl
  • Mix thoroughly until everything is evenly distributed.
    tenkasu and aonori mixed with tsuyu sauce in a bowl
  • Once all the liquid is absorbed, add 300 g cooked Japanese short-grain rice to the bowl and mix until the mixture is evenly spread through the rice.
    cooked rice mixed with tenkasu, aonori and tsuyu sauce
  • Divide the rice into equal portions and shape. Refer to the 3 ways to shape onigiri article for advice on how to shape onigiri by hand, using plastic wrap, or a mold. But I really recommend shaping this one with a mold as the rice is oily and hard to shape by hand.
    devil's onigiri mixture in a plastic rice ball mold
  • Enjoy!
    a hand holding up devil's onigiri with a white background

Video

Notes

  • Best eaten immediately. Rice balls for bento boxes should be wrapped with plastic wrap to prevent them from drying out and stored with an ice pack to keep them cool.
  • For storage, wrap individually in plastic wrap and store in a sealed container in the freezer for up to 1 month. Microwave to defrost.
  • Refrigeration is not recommended.

Nutrition

Calories: 125kcal | Carbohydrates: 23g | Protein: 3g | Fat: 2g | Saturated Fat: 0.3g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Sodium: 280mg | Potassium: 53mg | Fiber: 1g | Sugar: 1g | Vitamin A: 21IU | Calcium: 12mg | Iron: 1mg

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Yaki Onigiri (Japanese Grilled Rice Balls) https://sudachirecipes.com/yaki-onigiri-recipe/ https://sudachirecipes.com/yaki-onigiri-recipe/#comments Wed, 10 Jun 2020 06:49:46 +0000 http://sudachirecipes.com/?p=529 Featured Comment: “These were amazing! The tips regarding dipping hand in ice cold water was very helpful. Thank you this is a delicious recipe and as long as you take your time easy” What is Yaki Onigiri? Yaki Onigiri (焼きおにぎり) is a type of Japanese rice ball that is shaped into triangles, then coated with […]

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Featured Comment:

“These were amazing! The tips regarding dipping hand in ice cold water was very helpful. Thank you this is a delicious recipe and as long as you take your time easy”

– Aimee

What is Yaki Onigiri?

Yaki Onigiri (焼きおにぎり) is a type of Japanese rice ball that is shaped into triangles, then coated with a flavorful sauce and finally pan-fried or grilled to perfection.

The hallmark of yaki onigiri is its savory aroma from the Maillard reaction. This chemical process occurs when the seasoning on the rice, along with the natural sugars and amino acids in the rice, are exposed to heat. This reaction imparts a rich, umami-packed flavor and gives the onigiri a beautiful, deep color.

Another unique aspect of yaki onigiri is that they are typically not wrapped in nori (dried seaweed), setting them apart from other types of onigiri. This allows the grilled rice’s flavors, and textures and seasoning to shine through without the additional layer.

3 yaki onigiri rice balls on a charcoal grill
Yuto headshot

How I Developed This Recipe


Yaki Onigiri is one of my top three favorite onigiri variations, hands down. When I was putting this recipe together, my goal was simple: to create the ultimate version that meets my standards.

One of the main things I wanted to get right was the sauce, which is really important for yaki onigiri. I’ve refined the recipe to combine the best of both worlds. I blended soy sauce and miso to create a rich, flavorful coating.

Also, I know that grilling yaki onigiri can be a bit tricky compared to making regular onigiri, with a few potential hiccups along the way. To help you out, I’ll share some essential tips to avoid common mistakes.

Ingredients & Substitution Ideas

ingredients for yaki onigiri on a white background with labels
  • Cooked Japanese Short-Grain Rice: This is a must-have for any onigiris. Other types of rice will not work in this recipe. For recommended brands in the U.S. and cooking instructions, see my How to Cook Japanese Rice Recipe.
  • White Sesame Seeds: Mixed with rice for a subtly nutty flavor.
  • Unsalted Butter: Preferable to maintain control over the dish’s saltiness. If using salted butter, reduce the amount of other salty ingredients.
  • Soy Sauce: For brand recommendations, visit my soy sauce guide.
  • Mirin: Choose “hon mirin” (本みりん) for authentic flavor.
  • Toasted Sesame Oil: Adds subtle flavor to marinades.
  • Awase Miso Paste: Central to this sauce’s flavor. While any miso can be used, I find Awase (Yellow) Miso most fitting.
  • Garlic Paste: Grating fresh garlic is an alternative. The garlic pairs wonderfully with the miso and soy sauce!
Jump to Full Recipe Measurements
close up of grilled yaki onigiri

Visual Walkthrough & Tips

Here are my step-by-step instructions for how to make Yaki Onigiri at home. For ingredient quantities and simplified instructions, scroll down for the Printable Recipe Card below.

If you prefer to watch the process in action, check out my YouTube video of this recipe for a complete visual walkthrough!

STEP
Cooking the Rice
mixing rice in a black cooking pot with rice paddle

Start by cooking your rice. Use short-grain white rice, as it’s nice and sticky. This stickiness is crucial for holding the rice balls together.

I personally recommend using a rice cooker, but you can also see my post on ‘How to Make Japanese Rice on the Stove‘ for alternative methods.

If you prefer video format, check out my YouTube guide!
STEP
Preparing the Rice
cooked rice mixed with sesame seeds in a bowl

Once the rice is cooked, stir in 1 tablespoon of white sesame seeds. This step adds a subtle crunch and flavor to your onigiri. Then, divide the rice into six equal portions to keep the size uniform.

STEP
Shaping the Rice Balls
rice mixed with sesame seeds in a plastic rice ball mold

Now, shape six rice balls. Using an onigiri mold really helps to pack the rice tightly without breaking it.

Shaping by hand?

Prepare a bowl of ice cold water and dip your hands in for 20-30 seconds before shaping, this will stop the rice from sticking to your hands.

For more info and advice for shaping onigiri by hand, check out my post on ‘3 Ways to Shape Onigiri‘.

STEP
Drying the Onigiri
3 rice balls drying on a white plate to make yaki onigiri

Place the rice balls on a plate and let them air dry for about 10 minutes.

This is my most important tip: letting the onigiri dry creates a thin, dry crust on the outside. It gives a slightly crispy texture and helps the rice grains bond, so your onigiri won’t fall apart when brushed with sauce.

STEP
Mixing & Applying the Sauce
sauce for yaki onigiri

Combine the soy sauce, mirin, miso paste, sesame oil, and garlic paste in a small bowl until smooth and lump-free.

the front and back of three yaki onigiri brushed with sauce on a white plate

After 10 minutes of air drying, use a pastry brush to apply the sauce evenly over one side of each rice ball. A thin, even layer is key to prevent the onigiri from becoming too wet.

STEP
Soy Sauce Edge Brushing
brushing the edges of yaki onigiri with soy sauce using a silicone pastry brush

Pour a small amount of soy sauce into a bowl and brush it over the edges of the rice balls. This adds an extra depth of flavor to every bite. (I don’t use the sauce for the sides, since it contains mirin and the sides won’t be cooked.)

STEP
Frying the Onigiri
yaki onigiri fying in butter in a pan

Heat a frying pan on medium and add unsalted butter. Once it’s melted, place the onigiri in the pan with the sauce side facing down. Brush the tops with sauce and fry the onigiri for about 30 seconds to 1 minute on each side until they’re nicely browned.

In Japan, soy sauce and butter are a golden combo, adding a rich and delicious taste to the onigiri. If you’re grilling, just melt the butter and mix it with the sauce for that buttery flavor.

yaki onigiri on a gray Japanese plate with brown rim

Enjoy your homemade yaki onigiri straight from the pan!

Jump to Full Recipe Measurements
3 yaki onigiri rice balls on a charcoal grill

How to Store

It’s my personal preference, but I always love eating yaki onigiri straight out of the pan when they’re freshly made. Despite this, it’s also common to eat them cold and even put them in a bento box and eat them later.

If you have leftovers, you can also wrap them in plastic wrap and store them in the freezer for up to 1 month.

Place the wrapped onigiri in an airtight container to prevent freezer burn, and then microwave before eating!

3 yaki onigiri rice balls on a charcoal grill

FAQ

What kind of rice do you use for onigiri?

To ensure onigiri keeps its shape, you have to use Japanese short-grain white rice (the same kind used for sushi).

Is onigiri the same as sushi?

Sushi is made with sushi rice mixed with vinegar, salt, and sugar, whereas onigiri is made with simple salted rice. They are also shaped differently, so no, onigiri and sushi are not the same.

How do I stop yaki onigiri from falling apart?

Adding any sort of liquid to rice balls is going to compromise the stickiness and cause the shape to become fragile. To prevent yaki onigiri from breaking, I let them air dry on a plate for 10 minutes after shaping. This dries the outer layer of rice and creates a thin film, helping the onigiri hold its shape even after the sauce is applied.

holding yaki onigiri

I hope you enjoy this Yaki Onigiri recipe! If you try it out, I’d really appreciate it if you could spare a moment to let me know what you thought by giving a review and star rating in the comments below. It’s also helpful to share any adjustments you made to the recipe with our other readers. Thank you!

Print

Yaki Onigiri (Japanese Grilled Rice Balls)

Yaki onigiri are delicious, crispy grilled Japanese rice balls brushed with miso and soy sauce and fried in butter. With just a few typical Japanese pantry items, you can whip up this tasty snack in no time! They're perfect for bentos too!
Course Bento, Lunch, Snacks
Cuisine Japanese
Method Pan fry
Duration 15 minutes or less
Diet Egg Free, Pescatarian, Vegetarian
Prep Time 10 minutes
Cook Time 5 minutes
Total Time 15 minutes
Servings 6 rice balls
Calories 221kcal
Author Yuto Omura

Ingredients

Sauce

Instructions

  • First, cook your rice. Use short grain white rice, preferably Japanese sushi rice or something similar. You need the rice to be sticky so that it holds it shape. I recommend using a rice cooker or see my post how to make Japanese rice on stove.
    mixing rice in a black cooking pot with rice paddle
  • Once the rice is cooked, mix in 1 tbsp toasted white sesame seeds and divide it into 6.
    cooked rice mixed with sesame seeds in a bowl
  • Shape 6 rice balls. I recommend using an onigiri mold so that you can pack it more tightly without breaking it. (Check out this post for 3 ways to shape onigiri) Then
    rice mixed with sesame seeds in a plastic rice ball mold
  • Place the rice balls on a plate and allow to air dry for approx 10 minutes, turning halfway through so they can dry on both sides.
    3 rice balls drying on a white plate to make yaki onigiri
  • Mix the sauce ingredients (2 tbsp Japanese soy sauce (koikuchi shoyu), 1 tbsp mirin, 1 tsp toasted sesame oil, 1 tsp yellow miso paste (awase), 1 tsp garlic paste) in a small bowl.
    sauce for yaki onigiri
  • Once 10 minutes have passed, brush the sauce over one side of each rice ball.
    the front and back of three yaki onigiri brushed with sauce on a white plate
  • Pour 1 tbsp Japanese soy sauce (koikuchi shoyu) into a small bowl and brush it over the edges.
    brushing the edges of yaki onigiri with soy sauce using a silicone pastry brush
  • Heat a frying pan on medium and add 1 tbsp butter. Once it has melted, place the onigiri in the pan with the sauce side facing down. Brush the other side with the sauce and fry on each side for approximately 30 seconds to 1 minute, or until nicely browned.
    yaki onigiri fying in butter in a pan
  • Enjoy!
    yaki onigiri on a gray Japanese plate with brown rim

Video

Notes

  • I recommend shaping the onigiri with a plastic mold so that you can pack it tightly without breaking it.
  • If you grill the onigiri instead of using a pan, you can melt the butter and add it to the sauce.
  • For recommended rice brands and detailed cooking instructions, see my full Japanese rice guide.
  • Let onigiri dry before cooking to create a thin crust that prevents falling apart when brushed with sauce and provides a slightly crispy texture.
  • Always use a non-stick pan for this recipe.
  • Serving suggestions: miso soup or spinach ohitashi.

Nutrition

Calories: 221kcal | Carbohydrates: 43.6g | Protein: 3.8g | Fat: 3.8g | Saturated Fat: 1.4g | Polyunsaturated Fat: 0.9g | Cholesterol: 4.6mg | Sodium: 578mg | Fiber: 1.8g

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