Onigiri, or Japanese rice balls, are a beloved staple in Japanese cuisine. These delightful snacks are not only easy to make but also versatile, allowing for various fillings and seasonings. Perfect for a quick meal or a lunchbox treat, onigiri are both delicious and convenient.
When preparing onigiri, you might need to visit a specialty store or the international aisle of your supermarket for a few key ingredients. Japanese short-grain rice is essential for the right texture and stickiness. Nori (seaweed) is another crucial component, adding a savory flavor and helping to keep the rice ball intact.

Ingredients for Onigiri Japanese Rice Balls Recipe
Japanese short-grain rice: This type of rice is sticky and holds together well, making it ideal for forming rice balls.
Water: Used to cook the rice, ensuring it reaches the perfect consistency.
Salt: Adds flavor to the rice and helps in the shaping process.
Nori: Seaweed strips that wrap around the rice ball, adding flavor and texture.
Technique Tip for Making Onigiri
When shaping the rice into triangles or balls, keep your hands slightly damp to prevent the rice from sticking. This will help you achieve a smooth and even surface. Additionally, using a bit of salt on your hands not only adds flavor but also helps to preserve the onigiri.
Suggested Side Dishes
Alternative Ingredients
japanese short-grain rice - Substitute with sushi rice: Sushi rice has a similar sticky texture and short grain, making it an ideal replacement for Japanese short-grain rice.
japanese short-grain rice - Substitute with arborio rice: Arborio rice, commonly used in risotto, has a similar starchy quality and can mimic the texture of Japanese short-grain rice.
water - Substitute with dashi broth: Using dashi broth instead of water can add a deeper umami flavor to the rice, enhancing the overall taste of the onigiri.
salt - Substitute with soy sauce: Soy sauce can provide a salty and umami flavor, adding more depth to the rice balls.
nori (seaweed) - Substitute with rice paper: Rice paper can be used as a wrap if nori is unavailable, though it will have a different texture and flavor.
nori (seaweed) - Substitute with lettuce leaves: Lettuce leaves can serve as a fresh and crunchy alternative to nori, though they will not provide the same umami flavor.
Other Alternative Recipes Similar to Onigiri
How to Store / Freeze Onigiri
Allow the onigiri to cool completely at room temperature before storing. This prevents condensation, which can make the rice soggy.
Wrap each rice ball individually with plastic wrap. This helps maintain their shape and keeps them from drying out.
Place the wrapped onigiri in an airtight container or a resealable plastic bag. 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 1-2 days. This keeps them fresh and safe to eat.
For longer storage, place the wrapped onigiri in the freezer. They can be frozen for up to one month without significant loss of quality.
When ready to eat, thaw the onigiri in the refrigerator overnight. This gradual thawing process helps maintain the texture of the rice.
To reheat, remove the plastic wrap and microwave the onigiri for about 30 seconds to 1 minute, depending on your microwave's power. This brings back the warmth and softness of freshly made rice balls.
If you prefer a crispy texture, you can lightly pan-fry the thawed onigiri in a bit of sesame oil until golden brown on the outside. This adds a delightful crunch and enhances the flavor.
Always check the onigiri for any off smells or changes in texture before consuming, especially if they have been stored for an extended period.
For added flavor, consider incorporating fillings like pickled plum, tuna mayo, or grilled salmon before freezing. This makes each rice ball a delightful surprise when you bite into it.
How to Reheat Leftovers
Microwave method:
- Place the onigiri on a microwave-safe plate.
- Cover it with a damp paper towel to keep it moist.
- Heat on medium power for 1-2 minutes, checking halfway through to ensure it doesn't dry out.
Steaming method:
- Fill a pot with a small amount of water and bring it 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 vegetable oil.
- Place the onigiri in the pan and cook for 2-3 minutes on each side, or until the exterior is crispy and the inside is warm.
Oven method:
- Preheat your oven to 350°F (175°C).
- Wrap each onigiri in aluminum foil to prevent it from drying out.
- Place the wrapped onigiri on a baking sheet and heat for 10-15 minutes.
Air fryer method:
- Preheat the air fryer to 350°F (175°C).
- Lightly brush the onigiri with vegetable oil.
- Place the onigiri in the air fryer basket and cook for 5-7 minutes, shaking the basket halfway through to ensure even heating.
Best 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 rinse the rice under cold water until the water runs clear.
Mixing bowl: Useful for holding the rinsed rice before cooking.
Wooden spoon: Ideal for fluffing the rice once it's cooked.
Cutting board: Provides a clean surface to cut the nori into strips.
Sharp knife: Necessary for cutting the nori sheet into strips.
Small bowl: Holds water to wet your hands before shaping the rice balls.
Salt shaker: Sprinkles salt onto your wet hands to season the rice balls.
Serving plate: A place to arrange the finished onigiri for serving.
How to Save Time on Making Onigiri
Rinse efficiently: Use a fine-mesh strainer to quickly rinse the rice until the water runs clear.
Use a rice cooker: A rice cooker ensures perfectly cooked rice without constant monitoring.
Cool quickly: Spread the cooked rice on a baking sheet to cool it faster.
Pre-cut nori: Have the nori strips ready before you start shaping the onigiri.
Wet hands: Keep a bowl of water nearby to quickly wet your hands and prevent rice from sticking.
Batch shaping: Shape multiple onigiri at once to save time.

Onigiri Japanese Rice Balls Recipe
Ingredients
Main Ingredients
- 2 cups Japanese short-grain rice
- 2.5 cups Water
- 1 teaspoon Salt
- 1 sheet 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 them 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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