Onigiri Little Tokyo: Authentic Japanese Rice Balls

Onigiri, or Japanese rice balls, are a beloved snack and meal found throughout Japan, from convenience stores to dedicated shops like those in Los Angeles’s Little Tokyo. This recipe delivers perfectly seasoned, handheld rice balls with a savory filling, wrapped in crisp nori. The key to great onigiri is using the right rice and handling it gently, resulting in a satisfying, portable bite that’s both simple and deeply comforting.

Ingredients

2 cups (370 g) Japanese short-grain or sushi rice
2 1/2 cups (590 ml) water
1/2 teaspoon salt, plus more for shaping
1 tablespoon rice vinegar (optional, for flavor)
4 sheets of nori (dried seaweed), each cut into thirds
For the filling (choose one or mix):
- 1/2 cup (120 g) cooked salmon, flaked (or canned salmon, drained)
- 1/2 cup (120 g) umeboshi (pickled plum), pitted and chopped
- 1/2 cup (120 g) seasoned kombu (kelp) or takuan (pickled daikon)

Instructions

Rinse the rice: Place the rice in a fine-mesh strainer and rinse under cold running water, swishing with your hand, until the water runs clear (about 2-3 minutes). This removes excess starch and prevents gummy onigiri.
Cook the rice: Combine the rinsed rice and 2 1/2 cups (590 ml) water in a rice cooker or heavy-bottomed pot. If using a rice cooker, start it. If using a pot, bring to a boil over medium-high heat, then reduce to low, cover, and simmer for 15 minutes. Remove from heat and let steam, covered, for 10 minutes.
Season the rice: While the rice is still hot, transfer it to a large, shallow bowl (a wooden hangiri or a glass bowl works well). Sprinkle with 1/2 teaspoon salt and the rice vinegar (if using). Gently fold the rice with a rice paddle or spatula, using a cutting motion to avoid mashing the grains. Let it cool until it’s warm but comfortable to handle (about 10 minutes).
Prepare your work station: Fill a small bowl with water and add a pinch of salt (this is for wetting your hands to prevent sticking). Have your chosen fillings and nori strips ready.
Shape the onigiri: Wet your hands with the salted water. Scoop about 1/2 cup (roughly 90 g) of rice into one palm. Make a small indentation in the center and place about 1 tablespoon of filling inside. Gently mold the rice around the filling, pressing lightly to form a compact triangle or ball. The rice should hold together without being squeezed too hard.
Wrap with nori: After shaping all the onigiri, wrap a strip of nori around each one. The nori can be placed on the bottom or wrapped around the middle, depending on your preference. Serve immediately, or wrap each onigiri in plastic wrap to keep the nori crisp until ready to eat.

Tips

Use the right rice: Short-grain or sushi rice is essential for sticky, moldable onigiri. Long-grain rice (like jasmine or basmati) will fall apart. If you only have medium-grain, it can work but may be less sticky.
Keep hands wet: Always dip your hands in the salted water before touching the rice. This prevents sticking and lightly seasons the outside of the onigiri. Re-wet your hands between each ball.
Don’t overstuff: Too much filling makes the onigiri difficult to shape and prone to falling apart. A teaspoon to a tablespoon is plenty.
Cool slightly before shaping: The rice should be warm but not burning hot. If it’s too hot, it will be difficult to handle and may cook your hands. If it’s too cold, it won’t stick together as well.

Serving Suggestions

Onigiri are perfect for picnics, lunchboxes, or a quick snack. Serve them with a bowl of miso soup and a simple side salad for a light meal. They also pair well with pickled vegetables, edamame, or a piece of grilled fish. For a Little Tokyo-style experience, enjoy them with a cold green tea or a Japanese lager.

Variations

Classic fillings: Besides the ones listed, try cooked tuna mixed with mayonnaise, seasoned ground beef (cook to 160Â°F / 71Â°C safe minimum), or scrambled eggs.
Yaki onigiri (grilled): After shaping, brush the onigiri with a mixture of soy sauce and mirin, then grill or pan-fry until golden brown and slightly crispy on the outside. This adds a smoky, savory flavor.
Furikake: Mix furikake (Japanese rice seasoning) into the rice before shaping for an extra burst of umami and color.
Brown rice: Substitute cooked short-grain brown rice for a nuttier, more wholesome version. Add a bit more water when cooking, as brown rice needs more time and liquid.

Storage and Reheating

Onigiri are best eaten fresh, but they can be stored. Keep them wrapped in plastic wrap in the refrigerator for up to 2 days. The nori will become soft and chewy, which is fine if you like it that way. To reheat, remove the nori and microwave the rice ball for 20-30 seconds until warm. You can also pan-fry the onigiri with a little oil to crisp the outside. Do not freeze onigiri, as the texture of the rice will become grainy upon thawing.

Frequently Asked Questions

Can I use regular long-grain rice? No, long-grain rice lacks the starch needed to stick together. You need short-grain or sushi rice for authentic onigiri. If you use long-grain, it will fall apart and you’ll have to eat it with a fork.

Why does my rice stick to my hands? Your hands are not wet enough. Keep a bowl of salted water nearby and dip your hands before touching each rice ball. The water creates a barrier and also seasons the rice.

Can I make onigiri ahead of time? Yes, you can make them a few hours ahead, but the nori will lose its crispness. If you want to keep the nori crisp, wrap the onigiri in plastic wrap first, then add the nori just before serving.

What if I don’t have umeboshi or kombu? You can use any savory filling you like. Cooked and seasoned ground meat (cook to 160Â°F / 71Â°C safe minimum), canned tuna with mayonnaise, or even shredded cheese work well. The key is to have a flavorful, slightly moist filling.

How do I shape onigiri without a mold? Wet your hands and cup the rice, then gently press with your palms and fingers to form a triangle. Use your thumb to make the indentation for the filling. It takes a little practice, but you’ll get the hang of it. You can also buy plastic onigiri molds online or at Japanese grocery stores.

Is it safe to eat onigiri cold? Yes, onigiri are traditionally served at room temperature or cold. If you are packing them for lunch, keep them in a cool place and consume within 4 hours to ensure food safety. If you’re making them with raw fish, use fish sold for raw consumption that has been frozen per FDA guidance (-4Â°F / -20Â°C for 7 days) and serve the day it is made.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).