Onigiri (Japanese Rice Balls) with Classic Fillings
A master method for Japanese onigiri: properly cooked short-grain rice, salted hands, and a gentle triangle press. It comes with five classic fillings (shiozake, tuna mayo, umeboshi, okaka, and kombu tsukudani) and a konbini-style wrap that keeps the nori crisp until you eat it.
The konbini triangle, done right at home: perfectly seasoned rice, a savory heart, and crisp nori.
Why It Works
Japanese short-grain rice has more amylopectin, the sticky starch that lets the grains cling without turning mushy, which is why long-grain rice won't hold a shape. Soaking hydrates the grains evenly, and a 1.2× water ratio gives a firm, glossy texture that stands up to pressing. Salting your hands instead of the rice seasons only the outside, so every bite starts salty and ends with the clean sweetness of the rice. Shaping while the rice is warm lets the surface starch act as glue, and gentle pressure keeps air pockets inside so it's tender, not dense. Keeping the nori separate until eating prevents it from absorbing moisture and turning chewy.
Altitude note: at Front Range elevation, add an extra 1–2 Tbsp of water and a couple of minutes of simmer if cooking on the stovetop.
RECIPE CARD
Onigiri (Japanese Rice Balls) with Classic Fillings
Yield: 8 onigiri | Time: 1 hour (including rice)
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Equipment
- Rice cooker or heavy pot with lid
- Fine strainer or bowl (for rinsing rice)
- Rice paddle (shamoji)
- Small bowl of water
- Plastic wrap (optional, for no-mess shaping)
- Onigiri mold (optional)
- Konbini-style onigiri wrappers (optional)
Ingredients
- Rice
- 450 g (about 2 1/4 cups) Japanese short-grain rice (Koshihikari, or Calrose)
- 540 g water (1.2× the rice weight)
- Fine salt, for your hands (about 1 g per onigiri)
- 8 half-sheets nori (cut full sheets in half)
- Shiozake (salted salmon)
- 150 g salmon fillet, 5 g salt
- Tuna mayo
- 1 can (140 g) tuna in oil, drained
- 25 g Kewpie mayo, 3 g shoyu
- Umeboshi
- 2–3 umeboshi (pickled plums), pitted and chopped
- Okaka
- 5 g katsuobushi, 8 g shoyu
- Kombu tsukudani
- 40 g store-bought kombu tsukudani (simmered kelp)
- Optional finishes
- Toasted sesame seeds, furikake, shiso leaves
Instructions
Rice
- Rinse the rice, swishing and draining 3–4 times until the water runs mostly clear. Soak in the measured water for 30 minutes.
- Cook in a rice cooker, or bring to a boil in a covered pot, then simmer on low for 13 minutes and rest off the heat, covered, for 10 minutes.
- Fluff with a paddle using cutting motions. Let it cool until you can comfortably handle it but it's still warm. Warm rice sticks together; hot rice burns your hands, and cold rice won't bond.
Fillings
- Shiozake: salt the salmon and rest 30 minutes, pat dry, then broil or pan-sear until cooked through and lightly charred. Flake, discarding skin and bones.
- Tuna mayo: mix the tuna, Kewpie, and shoyu.
- Umeboshi: pit and roughly chop.
- Okaka: toss the katsuobushi with shoyu until moistened.
- Kombu: use straight from the package.
Shape
- Wet your hands, then rub about 1 g of salt across your palms. The salt seasons the outside of the rice.
- Take about 110 g of rice, flatten it slightly in your palm, and press a dent into the center. Add about 1 Tbsp of filling.
- Close the rice around the filling, adding a little more rice on top if needed.
- Cup one hand into a "V" and use the other flat hand to press. Rotate and press 3–4 times to form a triangle about 1" thick. Press firmly enough to hold, but not so hard that you crush the grains.
- Tip: shape inside plastic wrap sprinkled with salt for a no-mess version, or use a mold.
Wrap
- To eat now: wrap a half-sheet of nori around the base like a belt.
- For later (konbini-style): wrap each onigiri in plastic wrap and pack the nori separately (or in a konbini-style wrapper). Wrap the nori on right before eating so it stays crisp.
- Top with a little extra filling so you can tell them apart, or mark with sesame or furikake.
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Schossow Kitchen · schossowkitchen.com
