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 might need to visit a specialty store or the international aisle of your supermarket. Japanese short-grain rice is essential for the right texture and stickiness. Nori (seaweed) sheets are also crucial for wrapping the rice balls and adding a unique flavor.
Ingredients For Onigiri Japanese Rice Balls Recipe
Japanese short-grain rice: This type of rice is sticky and perfect for forming rice balls.
Water: Used to cook the rice.
Salt: Adds flavor to the rice.
Nori: Seaweed sheets cut into strips for wrapping the rice balls.
Technique Tip for Perfect Onigiri
When shaping the rice into onigiri, make sure your hands are slightly damp to prevent the rice from sticking. Additionally, using a bit of salt on your hands not only helps with flavor but also acts as a preservative, keeping the onigiri fresh for longer.
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 substitute for onigiri.
japanese short-grain rice - Substitute with arborio rice: Arborio rice, commonly used in risotto, has a similar sticky quality when cooked, though the flavor might be slightly different.
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 add a salty and umami flavor, though it will also change the color of the rice slightly.
nori (seaweed) - Substitute with rice paper: Rice paper can be used as a wrap for onigiri, though it will have a different texture and flavor compared to nori.
nori (seaweed) - Substitute with lettuce leaves: Lettuce leaves can be used as a fresh and crunchy alternative to nori, though they will not provide the same umami flavor.
Alternative Recipes Similar to Onigiri
How to Store and Freeze Onigiri
- 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 to maintain freshness and prevent them from sticking together.
- Place the wrapped onigiri in an airtight container to keep them from absorbing any odors from the fridge.
- Store the container in the refrigerator if you plan to consume the onigiri within 1-2 days. This ensures they remain fresh and safe to eat.
- For longer storage, place the wrapped onigiri in a freezer-safe bag, removing as much air as possible before sealing.
- Label the bag with the date to keep track of how long they have been stored.
- When ready to eat, thaw the onigiri in the refrigerator overnight. This gradual thawing helps maintain the texture of the rice.
- Reheat the rice balls by microwaving them for 30-60 seconds, or until they are warm throughout. Be sure to remove the plastic wrap before microwaving.
- If you prefer a crispy texture, lightly pan-fry the thawed onigiri in a bit of sesame oil until golden brown on each side.
- Serve with fresh nori strips, as the original ones may lose their crispness during storage.
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 steamer with water and bring it to a boil.
- Place the onigiri in the steamer basket, ensuring they do not touch the water.
- Steam for 5-7 minutes 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.
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 until warmed through.
Boiling method:
- Bring a pot of water to a gentle boil.
- Place the onigiri in a heatproof plastic bag or wrap in plastic wrap.
- Submerge in the boiling water for 5-7 minutes until heated through.
Best Tools for Making Onigiri
Rice cooker: Used to cook the Japanese short-grain rice to the perfect texture.
Measuring cups: Essential for accurately measuring the rice and water.
Strainer: Used to rinse the rice under cold water until the water runs clear.
Mixing bowl: Handy for holding the rinsed rice before cooking.
Wooden spoon: Useful for fluffing the rice once it’s cooked.
Cutting board: Provides a clean surface to cut the nori sheets into strips.
Sharp knife: Necessary for cutting the nori sheets into strips.
Small bowl: Used to hold water for wetting your hands while shaping the rice balls.
Salt shaker: Convenient for sprinkling salt on your wet hands.
Serving plate: Ideal for placing the finished onigiri before serving.
How to Save Time 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: Buy pre-cut nori strips to save time on cutting.
Wet hands: Keep a bowl of water nearby to wet your hands frequently, preventing rice from sticking.
Batch shaping: Shape multiple onigiri at once to streamline the process.

Onigiri Japanese Rice Balls Recipe
Ingredients
Main Ingredients
- 2 cups Japanese short-grain rice
- 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 2.5 cups of 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 each rice ball.
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