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Home - Cooking - Substitutes

Latest Updated: Feb 28, 2026 by Andrew Gray

Sushi Delights: 5 Best Substitutes for Bonito Flakes

Swap Bonito Flakes with Dulse Flakes and Nori Seaweed, Kombu or Konbu, Iriko or Baby Anchovies, Mackerel Powder, and Dried Shiitake Mushrooms.

Dulse Flakes and Nori Seaweed is the closest match - it has a similar flavor and works at a 1:1 ratio in most recipes.

For cooking, Kombu or Konbu also works well - adjust the amount to taste since it may be slightly stronger or milder.

Sushi lovers, unite! We're spilling the tea on the top five swaps for bonito flakes.

Think you can't whip up that umami magic without them? Think again.

These alternatives are easy to find and pack a punch of flavor. Why settle for the usual when you can jazz up your dishes with something new?

From vegan options to pantry staples, you're about to improve your cooking game.

No special trips to the store required - these swaps might already be in your kitchen.

Ready to get your chef on? Here is a look at this flavor-packed adventure.

Table of Contents

Toggle
  • The 5 Best Substitutes for Bonita Flakes (Katsuobushi)
    • 1 - Dulse Flakes and Nori Seaweed
    • 2 - Kombu or Konbu
    • 3 - Iriko or Baby Anchovies
    • 4 - Mackerel Powder
    • 5 - Dried Shiitake Mushrooms
  • Frequently Asked Questions

The 5 Best Substitutes for Bonita Flakes (Katsuobushi)

Bonito flakes, also known as katsuobushi, are a popular ingredient in Japanese cuisine.

They are made from dried, fermented, and smoked skipjack tuna, providing a unique umami flavor to dishes.

However, if you cannot find bonito flakes or prefer alternative options, there are several substitutes available - including ideas like eggs substitutes in meatballs for binding swaps.

SubstituteKey CharacteristicsProper Ratio
Dulse Flakes and Nori SeaweedDulse flakes offer a mild sea-like flavor with a soft texture, while nori seaweed provides a rich umami taste with a slightly crisp textureUse an equal amount of dulse flakes or crumbled nori seaweed as a substitute for bonito flakes
Kombu or KonbuKombu is a type of kelp with a deep, savory flavor; its high glutamic acid content adds umami to the dishUse a small piece (approximately 2-3 inches) of kombu or konbu when simmering broths or sauces
Iriko or Baby AnchoviesIriko or baby anchovies have a salty and intense flavor with strong umami characteristicsUse an equal amount of iriko or baby anchovies as a substitute for bonito flakes, adjusting to taste
Mackerel PowderMackerel powder offers a rich, fishy flavor that can replicate the umami taste of bonito flakesUse an equal amount of mackerel powder as a substitute for bonito flakes, adjusting to taste
Dried Shiitake MushroomsDried shiitake mushrooms provide a deep, earthy flavor with umami undertonesUse an equal amount of dried shiitake mushrooms as a substitute for bonito flakes, adjusting to taste

Here is a closer look at each option:

1 - Dulse Flakes and Nori Seaweed

dulse flakes and nori seaweed Save for Later!

Dulse flakes are not easily accessible in many supermarkets.

However, they are readily available online.

Regarding the nutritional content of the seaweed, it is rich in iron and iodine.

It can be used as a substitute for Katsuobushi for soups, salads, side dishes, or noodle dishes.

Norit is another seaweed product, but it is significantly different in taste and texture.

Norit seaweed consists of thin layers usually used to wrap sushi or rice balls.

However, it can also be crumbled into powder form.

This means that it works well with salads, soups, noodles, and sauces - and pairs with other seasonings like red pepper swaps for seasoning heat.

When dulse flakes are combined with nori seaweed, it yields a perfect combination of flavor and texture.

  • Key Characteristics: Dulse flakes have a mild sea-like flavor with a soft texture, while nori seaweed offers a rich umami taste with a slightly crisp texture. These substitutes can add a similar umami depth to dishes.
  • Proper Ratio: Use an equal amount of dulse flakes or crumbled nori seaweed as a substitute for bonito flakes. Adjust the quantity based on your recipe requirements and desired flavor intensity.

2 - Kombu or Konbu

kombu or konbu Save for Later!

If you're a fan of Japanese cooking, you will know that kombu is also quite popular.

It contributes a lot to the flavor and texture of dishes such as soups and broths.

Kombu is a seaweed product.

It has several nutritional benefits, including being rich in iodine and calcium, but it largely depends on the water in which it is grown.

Kombu is rather chewy, making it an ideal substitute for bonito flakes.

However, if you do not like its texture, you can soak it overnight to reduce the size of the seaweed shreds.

  • Key Characteristics: Kombu is a type of kelp with a deep, savory flavor. Its high glutamic acid content adds umami to dishes like broths and sauces.
  • Proper Ratio: Use a small piece (approximately 2-3 inches) of kombu or konbu when simmering broths or sauces. Adjust the quantity based on your recipe requirements and desired flavor intensity.

3 - Iriko or Baby Anchovies

iriko or baby anchovies Save for Later!

Reiko is a Japanese cured anchovy.

It is salted and fermented, but it does not boast the same pungent aroma as katsuobushi.

This product is also readily available online and can be used in place of bonito flakes for soups and noodle dishes.

Also, it has an important role in broth, so it is a great substitute for Katsuobushi flakes.

Also, ikura or salmon roe has a similar texture and consistency to bonito flakes.

Salmon roe can be used in soups and noodle dishes, but it must be slightly cooked before adding other ingredients.

For a quick leafy green comparison that clarifies texture and flavor differences, see arugula vs baby arugula comparison guide to choose the right peppery green alongside umami-rich ingredients.

  • Key Characteristics: Iriko or baby anchovies have a salty and intense flavor with strong umami characteristics. They can provide a similar umami punch to dishes as bonito flakes.
  • Proper Ratio: Use an equal amount of iriko or baby anchovies as a substitute for bonito flakes. Adjust the quantity based on your recipe requirements and desired flavor intensity.

4 - Mackerel Powder

For an intense and rich flavor that evokes a similar taste to katsuobushi, mackerel powder might be the way to go.

The mackerel is typically dried in the sun before being salted and cured.

It is then fermented in brine for up to one year, contributing to its pungent smell.

This product can be found online or at your local Asian grocery store.

Mackerel powder gives soups and sauces an intense umami flavor that tastes similar to katsuobushi flakes.

This product is versatile because it can be added to any dish you want - similar to how onion powder alternatives for flavor building are used to boost savory depth.

  • Key Characteristics: Mackerel powder offers a rich, fishy flavor that can replicate the umami taste of bonito flakes. It can be used to add depth and complexity to various dishes.
  • Proper Ratio: Use an equal amount of mackerel powder as a substitute for bonito flakes. Adjust the quantity based on your recipe requirements and desired flavor intensity.

5 - Dried Shiitake Mushrooms

dried shiitake mushrooms Save for Later!

Shiitake mushrooms are dark brown. They have a hard texture, but they can be easily broken down into small pieces.

These mushrooms are typically dried to allow them to last longer.

You can find these mushrooms at Asian grocery stores or online shops.

Dried shiitake mushrooms are great for imparting the umami flavor in soups and noodles.

You can also add them to seafood dishes or fried rice.

  • Key Characteristics: Dried shiitake mushrooms provide a deep, earthy flavor with umami undertones. They can add richness and complexity to recipes as a substitute for bonito flakes.
  • Proper Ratio: Use an equal amount of dried shiitake mushrooms as a substitute for bonito flakes. Adjust the quantity based on your recipe requirements and desired flavor intensity.

Frequently Asked Questions

What is the best substitute for Bonito Flakes?

Dulse Flakes and Nori Seaweed is the best substitute for Bonito Flakes because it shares a similar flavor and texture. Use it at a 1:1 ratio in any recipe that calls for Bonito Flakes.

Is there a good swap for this ingredient?

You have several options. Dulse Flakes matches the original closely, while Nori Seaweed and Kombu or Konbu brings a slightly different character.

Either works at a 1:1 ratio.

Are there any substitutes that are easier to find?

Yes. Check your grocery store's international or health food aisle for widely available options.

Many substitutes are pantry staples that are easier to source than the original.

What dishes work best with a substitute?

Forgiving dishes - soups, stews, casseroles, and sauces - are the best starting point. They mask small texture or flavor differences better than dishes where the ingredient is the star.

Versatile Choices: 5 Best Substitutes for Potato Flakes is useful for texture swaps. Versatile Choices: 5 Best Substitutes for Potato Flakes and Cereal Swap: 5 Best Corn Flakes Substitutes highlight pantry-friendly alternatives for common crunchy and starchy elements.

Explore more: This post is part of our Ingredient Substitutes Guide.
Andrew Gray

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Restaurant industry veteran sharing real recipes, honest substitutes, and tips that actually work in a home kitchen.

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