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Katsuo Dashi (Bonito Stock) かつおだし

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    Learn how to make Katsuo Dashi, a Japanese soup stock made from dried bonito flakes. With its savory and distinct umami aroma, this soup stock is a game changer in your Japanese cooking, and can turn a lackluster ramen bowl into something extraordinary!

    Katsuo Dashi (Bonito Stock) in a jar.

    There are numerous methods and ingredients in making dashi, Japanese soup stock that lays the foundation for many Japanese dishes. I’ve shared all the different recipes in making dashi (including vegetarian versions) on Just One Cookbook, but today I want to share how to make Katsuo Dashi (かつおだし).

    What is Katsuo Dashi?

    Katsuo Dashi (かつおだし) is made from katsuobushi (かつおぶし, 鰹節), dried and fermented bonito/skipjack tuna that is shaved into thin flakes. In Japanese cooking, the distinct umami taste from katsuobushi plays an important role to help heighten flavors and senses.

    Unlike other dashi ingredients such as kombu, iriko (niboshi), and shiitake mushrooms, katsuobushi does not need to be soaked before making delicious dashi. In other words, you can start making Katsuo Dashi now, and it only takes less than 15 minutes to make a rich and savory soup stock.

    How to Make Katsuo Dashi

    Just like all types of dashi, Katsuo Dashi is unbelievably easy to make.

    You just need to bring the water to a near boiling point and add katsuobushi shavings to the water. Let them sink in the pot and strain.

    Just like that, you get a beautiful golden color of Katsuo Dashi.

    Watch How to Make Katsuo Dashi

    Learn how to make Katsuo Dashi, a Japanese soup stock made from dried bonito flakes. With its savory and distinct umami aroma, this soup stock is a game changer in your Japanese cooking!

    Recipes Using Katsuo Dashi

    You can use katsuo dashi in miso soup or your ramen stock if you like, but below you can find recipes specifically use Katsuo Dashi:

    5 different types of dashi in a jar and their ingredients.

    The Ultimate Dashi Guide on Just One Cookbook

    Dashi is the master flavor enhancer in Japanese cooking, so you don’t need to season the food with too much salt, fat, and sugar. Its function is as indispensable as cooking oil, so anyone who is keen to cook authentic Japanese dishes at home will have to get started with dashi.

    There are five different types of dashi you can use in Japanese cooking, including vegetarian and vegan dashi (*).

    1. Kombu Dashi → made from kombu (dried kelp)*
    2. Katsuo Dashi → made from katsuobushi (dried bonito flakes)
    3. Iriko Dashi → made from iriko or niboshi (dried anchovies/sardines)
    4. Shiitake Dashi → made from dried shiitake mushrooms*
    5. Awase Dashi → made from a combination of all above or two (e.g., kombu + katsuobushi)

    If you are new to different types of dashi, check out my Ultimate Dashi Guide post.

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    4.29 from 7 votes
    Katsuo Dashi (Bonito Stock) in a jar.
    Katsuo Dashi (Bonito Stock)
    Prep Time
    15 mins
    Total Time
    15 mins

    Learn how to make Katsuo Dashi, Japanese soup stock made from dried bonito flakes. This stock enhances your Japanese meal with authentic flavor!

    Course: How to
    Cuisine: Japanese
    Keyword: dashi, katsuobushi, stock
    Servings: 800 ml (3 ⅓ cups)
    Author: Namiko Chen
    1. Gather all the ingredients.
      Katsuo Dashi Ingredients
    2. In a medium pot, bring water to a boil.
      Katsuo Dashi 1
    3. Just before water starts boiling, add the katsuobushi and bring it to a boil again, skimming occasionally.

      Katsuo Dashi 2
    4. Once the dashi is boiling, reduce the heat, simmer for just 30 seconds, and turn off the heat.
      Katsuo Dashi 3
    5. Let the katsuobushi sink to the bottom, about 10 minutes.
      Katsuo Dashi 4
    6. Strain the dashi through a fine-mesh sieve over a bowl or measuring cup (Reserve the katsuobushi and see below for what to do with it). Katsuo Dashi is ready to use.

      Katsuo Dashi 5
    To Store
    1. If you are not using the dashi right away, store the dashi in a bottle or mason jar and keep in the refrigerator for 3-5 days or in the freezer for 2 weeks.
      Katsuo Dashi (Bonito Stock) in a jar.
    What to Do with Used Katsuobushi
    1. Save the drained katsuobushi to make Homemade Furikake rice seasoning. If you don't use it right away, you can freeze them for 2-3 weeks.

      Katsuo Dashi 6
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