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Convenience Store-Style Tuna Mayo Onigiri
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CookpadCookpad
Japan Authentic home cooking from Japan, with US measurements.
Originally published on Cookpad Japan as まさにコンビニの…ツナマヨおにぎり
A picture of Convenience Store-Style Tuna Mayo Onigiri.

Convenience Store-Style Tuna Mayo Onigiri

キンプリ
キンプリ @cook_40301740
東京

You can make authentic, delicious convenience store-style tuna mayo onigiri at home! Give it a try!

Featured in Cookpad News on April 14, 2023.
Recipe background:
My sister taught me this truly tasty convenience store-style tuna mayo onigiri!

You can make authentic, delicious convenience store-style tuna mayo onigiri at home! Give it a try!

Featured in Cookpad News on April 14, 2023.
Recipe background:
My sister taught me this truly tasty convenience store-style tuna mayo onigiri!

Read more

Convenience Store-Style Tuna Mayo Onigiri

キンプリ
キンプリ @cook_40301740
東京

You can make authentic, delicious convenience store-style tuna mayo onigiri at home! Give it a try!

Featured in Cookpad News on April 14, 2023.
Recipe background:
My sister taught me this truly tasty convenience store-style tuna mayo onigiri!

You can make authentic, delicious convenience store-style tuna mayo onigiri at home! Give it a try!

Featured in Cookpad News on April 14, 2023.
Recipe background:
My sister taught me this truly tasty convenience store-style tuna mayo onigiri!

Read more
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Ingredients

Makes 3 onigiri
  1. 1/2 cantuna
  2. 1 1/2 tablespoonslight mayonnaise
  3. 1/2 tablespoonketchup
  4. 1 cupcooked rice (about 200 grams)
  5. 1 teaspoonwhite dashi
  6. 3 sheetsnori (seaweed)
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Steps

  1. 1

    Drain the oil from the tuna and place it in a bowl. Mash the tuna thoroughly.

    A picture of step 1 of Convenience Store-Style Tuna Mayo Onigiri.
  2. 2

    Add the mayonnaise and ketchup to the bowl and mix well.

    A picture of step 2 of Convenience Store-Style Tuna Mayo Onigiri.
  3. 3

    In a separate bowl, add the cooked rice and sprinkle with white dashi. Mix to combine.

    A picture of step 3 of Convenience Store-Style Tuna Mayo Onigiri.
  4. 4

    Using plastic wrap, gently shape the rice into onigiri (rice ball) shapes.

    A picture of step 4 of Convenience Store-Style Tuna Mayo Onigiri.
  5. 5

    Make a small indentation in the center, add the tuna filling, and form into onigiri.

    A picture of step 5 of Convenience Store-Style Tuna Mayo Onigiri.
  6. 6

    Wrap each onigiri with a sheet of nori.

    A picture of step 6 of Convenience Store-Style Tuna Mayo Onigiri.
  7. 7

    All done!

    A picture of step 7 of Convenience Store-Style Tuna Mayo Onigiri.
  8. 8

    Featured in Cookpad News on April 14, 2023. So happy—thank you!

    A picture of step 8 of Convenience Store-Style Tuna Mayo Onigiri.
  9. 9

    Featured again in Cookpad News on May 24, 2023. Thank you!

    A picture of step 9 of Convenience Store-Style Tuna Mayo Onigiri.
  10. 10

    Featured in the fall 2023 issue of 'cookpad plus' magazine on August 25, 2023. Thank you!

    A picture of step 10 of Convenience Store-Style Tuna Mayo Onigiri.
  11. 11

    It's on page 61! So happy!

    A picture of step 11 of Convenience Store-Style Tuna Mayo Onigiri.
  12. 12

    Featured for the third time in Cookpad News on May 20, 2025. Thank you so much!

    A picture of step 12 of Convenience Store-Style Tuna Mayo Onigiri.
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キンプリ
キンプリ @cook_40301740
Published in the US on November 11, 2025 18:00
東京
術後・療養中のためスロークックになります。楽しくクックしていきますのでよろしくお願いします。お返事は、少しずつさせて頂きます♡ご訪問ありがとうございます。皆様のレシピのおかげで料理レパートリーが増えました。お菓子作りが大好きな…普通のお母さんです・:*+☆*シフォン倶楽部会員**2021年9月キッチン開設*
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