Onigiri Recipes – Easy Japanese Rice Balls in 50 Minutes

There is a particular quiet that comes with shaping rice by hand. Warm grains against your palm, the faint steam rising in the kitchen light, the small weight of something made carefully and quickly. Onigiri is that quiet, wrapped in nori.

I first made these on a gray morning when the cupboard was nearly bare – just rice, a tin of tuna, and a sheet of seaweed. What came out of it was better than it had any right to be. Since then, rice balls have become my answer to almost everything: lunch, a late train, a child who will not sit still.

The method is simple, but the details matter. Rinse the rice until the water runs clear. Season while it is still warm. Keep your hands wet and your touch light. Do these three things and the rice will hold together like it trusts you.

About the Ingredients

2 cups (400g) short-grain Japanese rice, such as koshihikari

Short grains release just enough starch to cling together. If you cannot find Japanese rice, sushi rice works identically; do not substitute long-grain or basmati, which will not hold.

2 1/4 cups (530ml) cold water, for cooking the rice

Use filtered water if your tap is heavily chlorinated, as it can dull the rice's sweetness. A rice cooker measures this ratio perfectly, but a heavy pot works too.

1 1/2 teaspoons fine sea salt, plus more for wetting hands

Fine salt dissolves evenly into warm rice. Flaky salt is too coarse here; keep it for finishing instead.

1 sheet (about 4g) toasted nori, cut into 6 strips

Look for glossy, dark green nori with no brown edges. If yours is untoasted, pass it over a low flame for a few seconds until it smells of the sea.

1 can (5 oz / 142g) tuna in water, drained well

Squeeze the tuna in a paper towel until nearly dry, or the filling will weep into the rice. Canned salmon or shredded rotisserie chicken are easy swaps.

2 tablespoons Japanese mayonnaise, such as Kewpie

Kewpie is richer and slightly sweeter than standard mayo thanks to rice vinegar and egg yolks. Regular mayonnaise plus a pinch of sugar is a fine stand-in.

1 teaspoon soy sauce

Adds a savory depth to the tuna. Tamari makes it gluten-free; coconut aminos work if you need a soy-free version.

4 oz (115g) cooked salmon fillet, flaked, or 4 umeboshi plums

Leftover roasted salmon is ideal. If using umeboshi, pit them first – the sour-salty punch is the classic vegetarian filling.

1 teaspoon toasted sesame seeds, optional

Toast them yourself in a dry pan over medium heat for 2 minutes until fragrant. Black sesame looks striking against white rice.

Tips & Tricks

Season the rice while warm

fold the salt through as soon as it finishes steaming, when the grains still absorb. Cold rice will not take the seasoning evenly.

Keep your hands wet, not dripping

a small bowl of salted water beside you prevents sticking. Too much water makes the surface slippery and the ball will not seal.

• Rinse the rice until the water runs clear: three or four changes of water removes surface starch, which is the difference between distinct grains and a sticky paste.

Step-by-Step Instructions

1. Rinse and soak the rice

Place the rice in a bowl and cover with cold water. Swirl gently with your fingers, then pour off the cloudy water. Repeat three or four times until the water is nearly clear, then drain and let sit in a fine sieve for 10 minutes.

2. Cook the rice

Combine the drained rice and 2 1/4 cups cold water in a heavy pot with a tight lid. Bring to a boil over medium-high heat, about 212°F (100°C), then reduce to the lowest setting and cook covered for 15 minutes. Do not lift the lid. Turn off the heat and let it steam, covered, for another 10 minutes.

3. Season the warm rice

Tip the rice into a wide, shallow bowl – a wooden one if you have it. Sprinkle with the fine sea salt and fold gently with a rice paddle or spatula, cutting through rather than stirring. The grains should look glossy and smell faintly sweet.

4. Mix the tuna filling

In a small bowl, stir together the drained tuna, Japanese mayonnaise, and soy sauce until just combined. Taste and add a drop more soy if it needs depth. Set aside with the flaked salmon or pitted umeboshi.

5. Wet your hands

Keep a small bowl of cold water with a pinch of salt beside your work surface. Dip your palms and fingertips before each onigiri so the rice glides rather than clings.

6. Shape the onigiri

Take about 1/2 cup (100g) of warm rice in one hand. Press a small hollow in the center with your thumb, tuck in a teaspoon of filling, then close the rice over it. Cup both hands and press gently three times to form a triangle or rounded oval. The surface should feel firm but still tender under the thumb.

7. Wrap with nori

Lay a strip of nori across the base of each onigiri, pressing it lightly so it adheres. If serving later, wrap the nori separately in plastic and attach just before eating so it stays crisp. Sprinkle with sesame seeds if using.

8. Rest and serve

Let the onigiri rest at room temperature for 5 minutes so the shape sets. Serve the same day, when the rice is still faintly warm and the nori snaps cleanly between your fingers.

Delicious Variations

Salted salmon and shiso

fold torn shiso leaves into the rice and fill with flaked roasted salmon for a fragrant, herbal version.

Umeboshi and sesame

pit two umeboshi and place one in the center of each ball, then roll the finished onigiri in toasted sesame seeds.

Grilled yaki-onigiri

brush shaped onigiri with soy sauce and mirin, then grill over medium heat for 3 minutes per side until the edges are crisp and caramelized.

How to Store Onigiri Recipes

Frequently Asked Questions

Make a batch on a slow afternoon and wrap a few for tomorrow's pocket. They ask for so little, and give back a small, steady comfort. Less, but better.

Onigiri Recipes

These onigiri recipes make tender Japanese rice balls with seasoned rice, crisp nori, and savory fillings – a portable snack ready in under an hour.

★★★★½ 4.8 (214 ratings)

15 minPrep time35 minCook time6Servings285 kcalCalories

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🧂 Ingredients

• 2 cups (400g) short-grain Japanese rice, such as koshihikari
• 2 1/4 cups (530ml) cold water, for cooking the rice
• 1 1/2 teaspoons fine sea salt, plus more for wetting hands
• 1 sheet (about 4g) toasted nori, cut into 6 strips
• 1 can (5 oz / 142g) tuna in water, drained well
• 2 tablespoons Japanese mayonnaise, such as Kewpie
• 1 teaspoon soy sauce
• 4 oz (115g) cooked salmon fillet, flaked, or 4 umeboshi plums
• 1 teaspoon toasted sesame seeds, optional

📋 Instructions

1. 1Rinse and soak the rice — Place the rice in a bowl and cover with cold water. Swirl gently with your fingers, then pour off the cloudy water. Repeat three or four times until the water is nearly clear, then drain and let sit in a fine sieve for 10 minutes.
2. 2Cook the rice — Combine the drained rice and 2 1/4 cups cold water in a heavy pot with a tight lid. Bring to a boil over medium-high heat, about 212°F (100°C), then reduce to the lowest setting and cook covered for 15 minutes. Do not lift the lid. Turn off the heat and let it steam, covered, for another 10 minutes.
3. 3Season the warm rice — Tip the rice into a wide, shallow bowl – a wooden one if you have it. Sprinkle with the fine sea salt and fold gently with a rice paddle or spatula, cutting through rather than stirring. The grains should look glossy and smell faintly sweet.
4. 4Mix the tuna filling — In a small bowl, stir together the drained tuna, Japanese mayonnaise, and soy sauce until just combined. Taste and add a drop more soy if it needs depth. Set aside with the flaked salmon or pitted umeboshi.
5. 5Wet your hands — Keep a small bowl of cold water with a pinch of salt beside your work surface. Dip your palms and fingertips before each onigiri so the rice glides rather than clings.
6. 6Shape the onigiri — Take about 1/2 cup (100g) of warm rice in one hand. Press a small hollow in the center with your thumb, tuck in a teaspoon of filling, then close the rice over it. Cup both hands and press gently three times to form a triangle or rounded oval. The surface should feel firm but still tender under the thumb.
7. 7Wrap with nori — Lay a strip of nori across the base of each onigiri, pressing it lightly so it adheres. If serving later, wrap the nori separately in plastic and attach just before eating so it stays crisp. Sprinkle with sesame seeds if using.
8. 8Rest and serve — Let the onigiri rest at room temperature for 5 minutes so the shape sets. Serve the same day, when the rice is still faintly warm and the nori snaps cleanly between your fingers.

👨‍🍳 Chef's Note: Warm rice is the whole secret – shape it within ten minutes of steaming, while the grains still hold their softness and the salt melts through.

Servings: 6

Cuisine: Japanese

Course: Snack

Nutrition (per serving): 285 kcal · 12g protein · 22g carbs · 9g fat

Written by Ingrid Sørensen

Ingrid explores Scandinavian minimalist design and slow living. She writes about creating calm, functional spaces with fewer, better things.