Recreating Sasuke-inspired onigiri is about as easy as anime food gets. These simple Japanese rice balls have a savory bonito-and-soy filling tucked inside soft sushi rice, with a little sweetened sushi vinegar for a gentle tang.
This is an anime-inspired home version. The vinegar gives it a sushi-style twist; traditional onigiri is usually made with plain, lightly salted rice.
Jump to ingredients and method ↓ · Step-by-step instructions ↓
Yield: About 6 medium onigiri | Prep time: About 15 minutes, starting with cooked rice
Ingredients
- 3 cups cooked sushi rice, still warm
- 1 cup bonito flakes (katsuobushi), loosely packed
- 2 tablespoons soy sauce
- 2 tablespoons sweetened sushi vinegar
- Salt, to taste
Rice note: The 3 cups here means cooked rice. If starting with dry sushi rice, follow your package instructions and measure out 3 cups after cooking. Use short-grain sushi rice so the onigiri hold together.
Instructions
- Season the rice. Gently fold the sweetened sushi vinegar into the warm cooked rice without mashing the grains. Let it cool just until comfortable to handle.
- Make the filling. Stir the bonito flakes and soy sauce together until evenly moistened. The mixture should be moist rather than swimming in liquid.
- Prepare your hands. Wash your hands thoroughly, then lightly dampen them with clean water. Rub a small pinch of salt over your palms. Go lightly: the soy sauce already adds salt.
- Fill each rice ball. Divide the rice into 6 portions. Flatten one portion in your palm, make a shallow hollow in the center, and add one-sixth of the bonito filling. Bring the rice around the filling and seal it inside.
- Shape and serve. Gently press into a rounded triangle, using just enough pressure for it to hold together. Repeat with the remaining rice and filling, dampening your hands as needed. Serve promptly.
Tips for rice balls that hold their shape
- Work with warm rice. Fully chilled rice is harder to shape.
- Keep the filling away from the outside edges so each onigiri seals cleanly.
- Use light, even pressure to keep the rice tender.
- No seaweed is needed for this five-ingredient version.
Storage and allergens
These are best freshly made. Refrigerate leftovers promptly in a shallow, airtight container at 40°F (4°C) or below within 2 hours of preparation (within 1 hour above 90°F / 32°C). Enjoy within 24 hours for the best rice texture, and do not store cooked leftovers in the refrigerator for more than 3 to 4 days (reheat thoroughly to 165°F / 74°C if serving warm). Keep chilled if packing for later; sushi vinegar alone does not make homemade rice safe to leave at room temperature.
Allergens: Bonito contains fish. Standard soy sauce contains soy and usually wheat; check labels for your dietary needs.
The images accompanying this recipe are AI-generated illustrations.
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