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Japanese Tuna Onigiri Recipe

4.9 from 150 reviews

Japanese Tuna Onigiri is a classic, simple rice ball filled with a savory tuna and mayonnaise mixture, wrapped in nori seaweed. This easy-to-make snack combines fluffy cooked rice with a creamy tuna filling for a satisfying and portable treat that’s perfect for lunchboxes, picnics, or a quick bite anytime.

Ingredients

Scale

Ingredients

  • 2 cups cooked Japanese short-grain rice (preferably slightly cooled)
  • 1 can (about 5 oz) tuna in water or oil, drained
  • 2 tablespoons Japanese mayonnaise (such as Kewpie)
  • 1/4 teaspoon salt
  • 2 sheets nori (seaweed), cut into strips or halves

Instructions

  1. Prepare the Tuna Filling: In a small bowl, combine the drained tuna with the mayonnaise and salt. Mix thoroughly until the tuna is evenly coated and creamy.
  2. Shape the Onigiri: With wet hands to prevent sticking, take a handful of cooked rice and flatten it slightly. Place a spoonful of the tuna mixture in the center, then carefully mold the rice around the filling to form a compact triangle or ball, sealing the filling inside.
  3. Wrap with Nori: Wrap a strip or piece of nori around the shaped rice ball. The nori adds flavor and makes the onigiri easy to hold.
  4. Serve: Enjoy immediately or wrap in plastic wrap to keep fresh for lunch or later snacking.

Notes

  • Use Japanese short-grain rice ideally cooked and slightly cooled for best stickiness and texture.
  • Wet your hands with salted water before shaping rice to prevent sticking and add flavor.
  • Adjust mayonnaise quantity to your preference for creaminess.
  • Onigiri is best eaten fresh but can be stored in an airtight container and consumed within a day.
  • Optional: Add a sprinkle of toasted sesame seeds inside or on the outside for extra flavor.

Keywords: Japanese, Onigiri, Tuna, Rice Ball, Japanese Snack, Nori, Seafood, Easy, Picnic Food