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Authentic Japanese Tuna Onigiri

Authentic Japanese Tuna Onigiri: 7 Steps to Deliciousness


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  • Author: Jessica
  • Total Time: 20 minutes
  • Yield: 4 onigiri 1x
  • Diet: Gluten Free

Description

Authentic Japanese Tuna Onigiri is a delicious rice snack that blends comfort and convenience in every bite.


Ingredients

Scale
  • 2 cups cooked short-grain rice
  • ½ tsp salt
  • 5.29 oz canned tuna (in oil or water), thoroughly drained
  • 2 tbsp Japanese mayonnaise
  • 2 sheets Nori (dried seaweed), cut into strips
  • 1 tsp sesame seeds (optional, for garnishing)

Instructions

  1. Season Rice: Transfer 2 cups warm, cooked short-grain rice to a large bowl. Sprinkle with ½ tsp salt. Gently fold the rice to combine without mashing. Allow to cool slightly until warm enough to handle comfortably.
  2. Prepare Tuna Filling: Thoroughly drain 5.29 oz canned tuna. In a medium mixing bowl, flake the tuna and mix with 2 tbsp Japanese mayonnaise until well combined and creamy.
  3. Prepare for Shaping: Lightly dampen your hands with water and sprinkle a pinch of salt onto your palms, rubbing them together lightly. This prevents sticking and subtly seasons the onigiri’s exterior.
  4. Form Onigiri: Take about ½ cup of the seasoned rice and cup it loosely in one palm. Use your thumb to create a shallow indentation in the center. Spoon 1 to 1½ tbsp of the tuna filling into the well. Cover the filling with another small amount of rice (about ¼ cup), pressing down lightly to seal it inside.
  5. Shape Onigiri: Gently but firmly shape the rice into a compact triangle between your hands, rotating to create even sides and pointed corners. Alternatively, use plastic wrap around the rice for easier shaping and consistent results.
  6. Add Nori & Garnish: Wrap a strip of nori around the base of each shaped onigiri. The rice’s moisture will help it adhere. Garnish with 1 tsp sesame seeds, if desired.
  7. Serve & Store: Japanese Tuna Onigiri is best enjoyed warm or at room temperature. For storage, wrap each onigiri individually in plastic wrap (without nori). Refrigerate for up to a day, or freeze for longer storage. Always add fresh nori just before serving stored onigiri.

Notes

  • Use short-grain rice for the best texture.
  • Adjust the amount of salt based on your taste.
  • Fresh nori adds a nice crunch when serving.
  • Prep Time: 10 minutes
  • Cook Time: 10 minutes
  • Category: Snack
  • Method: No-cook
  • Cuisine: Japanese

Nutrition

  • Serving Size: 1 onigiri
  • Calories: 180
  • Sugar: 1g
  • Sodium: 300mg
  • Fat: 7g
  • Saturated Fat: 1g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 24g
  • Fiber: 1g
  • Protein: 7g
  • Cholesterol: 20mg