Onigiri, or Japanese rice balls, are a popular and versatile snack in Japan. They are simple to make and can be enjoyed plain or with various fillings. Perfect for a quick meal or a lunchbox treat, onigiri are both delicious and convenient.
When preparing this recipe, you may need to visit a specialty Asian supermarket to find Japanese short-grain rice and nori. Japanese short-grain rice is essential for the right texture, as it is stickier than other types of rice. Nori, or seaweed, is used to wrap the rice balls and adds a unique flavor.

Ingredients For Onigiri Japanese Rice Balls Recipe
Japanese short-grain rice: This type of rice is stickier and more suitable for forming rice balls.
Water: Used to cook the rice.
Salt: Adds flavor to the rice and helps in shaping the rice balls.
Nori: Seaweed sheets cut into strips, used to wrap the rice balls.
Technique Tip for Perfect Onigiri
When shaping the rice into onigiri, keep a small bowl of water nearby to dip your hands in periodically. This prevents the rice from sticking to your hands and makes it easier to form the rice balls. Additionally, using slightly warm rice can help it stick together better, making the shaping process smoother.
Suggested Side Dishes
Alternative Ingredients
japanese short-grain rice - Substitute with sushi rice: Sushi rice is also a type of short-grain rice and has a similar sticky texture, making it a good alternative for onigiri.
japanese short-grain rice - Substitute with arborio rice: Arborio rice, commonly used in risotto, has a similar starchy quality that can mimic the sticky texture of Japanese short-grain rice.
water - Substitute with dashi: Using dashi, a Japanese stock, can add an extra layer of umami flavor to the rice, enhancing the overall taste of the onigiri.
salt - Substitute with soy sauce: Soy sauce can provide a salty flavor along with additional umami notes, making it a flavorful alternative to plain salt.
nori (seaweed) - Substitute with rice paper: Rice paper can be used as a wrap for onigiri, offering a different texture but still serving the purpose of holding the rice ball together.
nori (seaweed) - Substitute with shiso leaves: Shiso leaves provide a fresh, herbal flavor and can be used to wrap the rice balls, offering a unique twist on the traditional onigiri.
Alternative Recipes Similar to Onigiri
How to Store or Freeze Your Rice Balls
- Allow the onigiri to cool completely before storing. This prevents condensation, which can make the rice soggy.
- Wrap each rice ball individually in plastic wrap. This helps maintain their shape and keeps them fresh.
- Place the wrapped onigiri in an airtight container. This adds an extra layer of protection against moisture and odors.
- Store the container in the refrigerator if you plan to consume the onigiri within a day or two. This keeps the rice fresh and prevents spoilage.
- For longer storage, place the wrapped onigiri in a freezer-safe bag. Squeeze out as much air as possible before sealing to prevent freezer burn.
- Label the bag with the date. This helps you keep track of how long the onigiri have been stored.
- When ready to eat, thaw the onigiri in the refrigerator overnight. This ensures they defrost evenly and maintain their texture.
- To reheat, wrap the onigiri in a damp paper towel and microwave for 30-60 seconds. This helps restore the rice's moisture and fluffiness.
- Avoid reheating onigiri with nori attached, as it can become soggy. Instead, add fresh nori after reheating.
How to Reheat Leftovers
Microwave Method:
- Place the onigiri on a microwave-safe plate.
- Cover with a damp paper towel to keep the rice moist.
- Heat on medium power for 1-2 minutes, checking halfway through to ensure even heating.
Steaming Method:
- Fill a pot with a small amount of water and bring to a simmer.
- Place the onigiri in a steamer basket over the simmering water.
- Cover and steam for about 5-7 minutes, or until heated through.
Pan-frying Method:
- Heat a non-stick pan over medium heat and add a small amount of sesame oil.
- Place the onigiri in the pan and cook for 2-3 minutes on each side, until the exterior is crispy and the inside is warm.
- Optionally, brush with a bit of soy sauce for added flavor.
Oven Method:
- Preheat the oven to 350°F (175°C).
- Wrap each onigiri in aluminum foil to prevent drying out.
- Place on a baking sheet and heat for 10-15 minutes, or until warmed through.
Air Fryer Method:
- Preheat the air fryer to 350°F (175°C).
- Lightly spray the onigiri with cooking spray to prevent sticking.
- Place in the air fryer basket and cook for 5-7 minutes, shaking the basket halfway through for even heating.
Essential Tools for Making Onigiri
Rice cooker: Essential for cooking the Japanese short-grain rice to the perfect texture.
Measuring cups: Used to measure the exact amount of rice and water needed.
Strainer: Helps in rinsing the rice thoroughly until the water runs clear.
Mixing bowl: Useful for holding the rinsed rice before cooking.
Wooden spoon: Ideal for fluffing the cooked rice without crushing the grains.
Cutting board: Provides a clean surface to cut the nori sheets into strips.
Sharp knife: Necessary for cutting the nori sheets precisely.
Small bowl: Holds water to wet your hands while shaping the rice balls.
Salt shaker: Convenient for sprinkling salt on your wet hands.
Serving plate: Used to place the finished onigiri before serving.
How to Save Time When Making Onigiri
Rinse efficiently: Use a fine-mesh strainer to rinse the rice quickly and thoroughly.
Cook in bulk: Prepare extra rice and store it in the fridge for quick assembly later.
Cool rapidly: Spread the cooked rice on a baking sheet to cool it faster.
Pre-cut nori: Cut the nori sheets into strips ahead of time to save assembly time.
Use a mold: Invest in an onigiri mold to shape the rice balls quickly and uniformly.
Wet hands: Keep a bowl of salted water nearby to wet your hands easily between shaping each onigiri.

Onigiri Japanese Rice Balls Recipe
Ingredients
Main Ingredients
- 2 cups Japanese short-grain rice uncooked
- 2.5 cups Water
- 1 teaspoon Salt
- 4 sheets Nori (seaweed) cut into strips
Instructions
- Rinse the rice under cold water until the water runs clear.
- Cook the rice in a rice cooker with the water.
- Once cooked, let the rice cool slightly.
- Wet your hands with water and sprinkle with salt.
- Take a handful of rice and shape it into a triangle or ball.
- Wrap a strip of nori around the rice ball.
- Repeat with the remaining rice.
Nutritional Value
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