Spicy Tuna Onigiri

Blog Post: Spicy Tuna Onigiri Recipe

Onigiri, also known as Japanese rice balls, are a staple in Japanese cuisine and make for a perfect snack or light meal. Today, I’m sharing a simple yet flavorful version—Spicy Tuna Onigiri. These rice balls are filled with a delicious blend of canned tuna, Japanese mayo, and sriracha sauce, then wrapped in nori for a perfect bite. Whether you’re new to making onigiri or a seasoned pro, this recipe is easy to follow and absolutely satisfying.

Ingredients

  • Sushi Rice:
    • 240 g sushi rice (uncooked) or 1 ½ rice cooker cups
    • ½ or 2 sheets nori (based on personal preference)
    • ½ teaspoon salt
    • ½ teaspoon black sesame seeds (optional for garnish)
    • Water to moisten hands and rice paddle
  • Spicy Tuna Filling:
    • 104 grams canned tuna, drained
    • 1 ½ tablespoon Japanese mayo (or regular mayo)
    • 1 teaspoon sriracha sauce

Directions

  1. Cook the Rice:
    • Rinse the sushi rice under cold water until the water runs clear. Cook the rice in a rice cooker or pot according to package instructions. Once cooked, transfer the rice to a large bowl, season with salt, mix well, and let it cool to room temperature.
  2. Prepare the Spicy Tuna Filling:
    • In a small bowl, mix the drained tuna with Japanese mayo and sriracha sauce. Set aside.
  3. Shape the Onigiri:
    • Prepare a 15 x 15 inch piece of cling film on a clean surface. Moisten a rice paddle with water to prevent sticking.
    • Divide the rice into four equal portions. Place one portion on the cling film and flatten it into a ½ to ¾ inch thick circle.
    • Place a portion of the spicy tuna mixture in the center of the rice.
    • Lift the corners of the cling film and twist to form a ball, ensuring the tuna filling is enclosed in the center.
    • Gently press down to flatten the ball into a 2-inch thick disc, then shape it into a triangle using the L-shape of your thumb and index finger.
  4. Wrap and Garnish:
    • Cut the nori sheets as desired and wrap a strip around the base of each rice ball. Garnish with black sesame seeds if using.

Final Thoughts

Spicy Tuna Onigiri is a delightful combination of flavors and textures—soft and savory rice encasing a spicy, creamy tuna filling. It’s a perfect recipe to try when you’re in the mood for something quick, easy, and delicious. These onigiri are also great for packing in lunches or enjoying as an on-the-go snack.

Enjoy your homemade Spicy Tuna Onigiri, and don’t forget to share your creations!

Recipe Information:

  • Prep Time: 20 minutes
  • Cooking Time: 30 minutes
  • Total Time: 50 minutes
  • Calories: 280 kcal per serving
  • Servings: 4 servings

I hope you find this recipe as enjoyable to make as it is to eat! Let me know if you have any tips or variations in the comments below.

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Spicy Tuna Onigiri


  • Author: Dulcia
  • Total Time: 50 minutes
  • Yield: 4 1x

Ingredients

Scale

240 g sushi rice uncooked (or 1 ½ rice cooker cups)

½ or 2 sheets nori (based on personal preference)

½ teaspoon salt

½ teaspoon black sesame seeds (optional for garnish)

Water to moisten hands and rice paddle

Spicy Tuna Filling:

104 grams canned tuna, drained
1
½ tablespoon Japanese mayo (or regular mayo)

1 teaspoon sriracha sauce


Instructions

Rinse the sushi rice under cold water until the water runs clear. Cook in a rice cooker or a pot according to package instructions. Once cooked, transfer the rice to a large bowl, season with salt, mix well, and let cool to room temperature.
In a small bowl, mix the drained tuna with Japanese mayo and sriracha sauce. Set aside.
Prepare a 15 x 15 inch piece of cling film on a clean surface. Moisten a rice paddle with water.
Divide the rice into four equal portions. Place one portion on the cling film and flatten into a ½ to ¾ inch thick circle.
Place a portion of the spicy tuna mixture in the center of the rice.
Lift the corners of the cling film and twist to form a ball, ensuring the tuna filling is enclosed in the center.
Gently press down to flatten the ball into a 2-inch thick disc, then shape into a triangle using the L-shape of your thumb and index finger.
Cut the nori sheets as desired and wrap a strip around the base of each rice ball. Garnish with black sesame seeds if using.

  • Prep Time: 20 minutes
  • Cook Time: 30 minutes

Nutrition

  • Calories: 280 Kcal
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