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Home » Recipes » Sauces

Tsuyu Sauce 101: Multipurpose Dashi-Based Sauce

Published: Mar 1, 2020 · Modified: Sep 14, 2023 by Yuto Omura

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This delicious tsuyu sauce will add extra umami and authenticity to your Japanese cooking. It is versatile and great for noodles, soups and seasoning. It can be hard to find outside of Japan, but luckily, it's easy to make at home and adapt for plant-based diets!

tsuyu sauce in white bottle and dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

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Jump to:
  • What is Tsuyu Sauce?
  • 3 Dashi Variation Ideas for Your Own Tsuyu Sauce
  • Ingredients to Make This Tsuyu Sauce Recipe
  • Step-by-Step Process
  • How to Use Tsuyu Sauce (water ratio)
  • Storage Options
  • Homemade Tsuyu Sauce (Multipurpose Dashi-Based Sauce)
  • Recommended Tsuyu Sauce If You Want to Buy Store-bought One
  • Recipe Ideas Using Tsuyu Sauce
  • FAQ

What is Tsuyu Sauce?

Tsuyu sauce" is a multi-purpose condiment made from dashi stock, soy sauce, and mirin (sweet cooking rice wine). There are concentrated types and diluted types that are ready to use. In Japan, the concentrated type is often called "Tsuyu-no-moto," "Kaeshi" or "Tsuyu," and these can be watered down depending on the usage (dipping, broths etc). The ready-to-use type is called "mentsuyu" or "straight" and are most commonly used for noodles.

The type of dashi (or dashi ingredients) used varies widely depending on the brand. Some use bonito flakes or mackerel flakes, some use only kombu (kelp), and others use a combination of various types.

With the recipe I will introduce in this post, you can easily change the type of dashi ingredients you use to suit your personal preferences and dietery needs. It can be used as a dipping sauce for zaru udon, zaru soba, or tempura by diluting it with water or can even be used straight as a condiment in cooking.

tsuyu sauce in white ceramic bottle and dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

3 Dashi Variation Ideas for Your Own Tsuyu Sauce

Tsuyu sauce can be customized to your liking and dietery needs by using different dashi ingredients. Dashi is a Japanese stock that is rich in umami, and is essential in Japanese cuisine. The four most common ingredients used to make dashi stock are katsuobushi (bonito flakes), kombu (dried kelp), dried shiitake mushrooms, and niboshi (dried sardines). I have made three different variations of tsuyu sauce for this article, including a plant-based type that is suitable for vegetarians and vegans.

Bonito Flakes and Dried Kelp

Katsuobushi (bonito flakes) and kombu (dried kelp) are a classic and simple dashi combination! The umami component in bonito flakes is inosinic acid, while the umami component in kelp is glutamic acid.

When these two umami components meet, the umami of the dashi becomes much stronger. This synergistic effect is why bonito/kelp dashi is so loved in Japanese cuisine. Naturally, it is also one of the best combinations to use to make tsuyu sauce.

Dried Kelp and Dried Mushroom (Vegan)

top down shot of tsuyu sauce in sauce bottle and dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

This kombu and shiitake dashi is a classic dashi combination for vegetarian dishes. The glutamic acid in kelp and guanylic acid in dried shiitake mushrooms combine to create a delicious flavor.

This is a great option for those who do not want to use fish products in their dashi!

Bonito Flakes, Dried Kelp and Dried Sardine

The last combines dried bonito flakes, kelp, and niboshi (dried sardines). My favorite dashi recipe inspires this one. The addition of dried sardines adds a richer flavor with more depth and has more of a briny taste, but it is especially good for making miso soup, noodle soups and hot pot broths.

Ingredients to Make This Tsuyu Sauce Recipe

  • Soy sauce - It is an important element of the base of the sauce. Please see our guide to soy sauce article to learn more about how to choose soy sauce in Japanese cuisine.
  • Mirin - When purchasing mirin, it is recommended to look for "hon mirin" (本みりん) for the best flavor. I recommend Hinode Hon Mirin as a high-quality and affordable option. See my 20 Most Useful Condiments and Seasonings for Japanese Cooking post for more recommendations.
  • Dashi elements - You can adjust to your own taste, such as bonito flakes, kelp, dried shiitake mushrooms, etc. Examples of combinations are presented in a later section.
  • Sugar - The sugar you normally use is fine, but I've been using light brown cane sugar for most dishes lately.
Japanese Pantry Ideas

I have listed my recommended Japanese condiments, tools, and ingredients in the Sudachi Recipes Amazon shop. If you want to keep making various Japanese foods at home, please check it out!

tsuyu sauce in white ceramic bottle and dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

Step-by-Step Process

Here are my step-by-step instructions for how to make versatile homemade Japanese tsuyu sauce from scratch. For ingredient quantities and simplified instructions, scroll down to see the printable recipe card.

STEP
Boil mirin

Pour the mirin into a saucepan and boil for 30 seconds to burn off the alcohol.

cooking mirin and sugar in a saucepan to make tsuyu sauce
STEP
Add soy sauce and sugar

Add the soy sauce and sugar and allow to boil for 30 more seconds before removing the pan from the heat. Mix well to ensure the sugar has dissolved.

cooking tsuyu sauce in a saucepan
STEP
Cool

Pour the sauce into a heatproof container (choose a container with a lid for later storage). Leave to cool to room temperature.

tsuyu sauce cooling in a heatproof container
STEP
Soak dashi ingredients

Add your choice of dashi ingredients. The classic combination is bonito flakes and kombu. For a plant-based version, use shiitake and kombu. For my favorite "rich" tsuyu, add bonito flakes, kombu and dried sardines. Feel free to mix and experiment with different combinations!

tsuyu sauce made with three types of dashi ingredients (left to right) shiitake, niboshi (dried sardines), katsuobushi and kombu (bonito flakes and dried kelp)

Place a lid on and store in the fridge overnight (at least 12 hours).

STEP
Strain

Place a fine mesh sieve over a pourable container and pour the tsuyu sauce in to remove the dashi ingredients. If you used bonito flakes, be sure to squeeze them to catch all the tsuyu sauce and prevent any waste.

Straining dashi ingredients to make tsuyu sauce
STEP
Use and store

Use your homemade tsuyu sauce as a dipping sauce or to make soups or noodle broths! To store, transfer to a sterilized container and keep in the fridge for up to 2 weeks. See more storage options below.

Homemade multipurpose tsuyu sauce in a measuring jug

How to Use Tsuyu Sauce (water ratio)

As tsuyu is a concentrated sauce and there are many ways to use it. Here is a general guide on how much it should be diluted depending on the useage.

  • As a condiment for cooking - Use as it is.
  • Dipping sauce for zaru soba and zaru udon - 1 part tsuyu, 2-3 parts water.
  • Tempura dipping sauce - 1 part tsuyu, 3-4 parts water.
  • Agedashi tofu - 1 part tsuyu, 3 parts water.
  • Soup for kake soba and kake udon - 1 part tsuyu, 5-6 parts water.

This is just a general guide and you can dilute according personal preference.

tsuyu sauce in white ceramic bottle and dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

Storage Options

Homemade tsuyu sauce requires specific storage methods to maintain its freshness. They are not suitable for room temperature storage; after using the required amount, immediately store the remaining sauce in a clean, sterilized container in the refrigerator. By only using a clean spoon to retrieve the amount needed and promptly returning it to the fridge, the sauce can be safely stored for up to two weeks.

For longer storage, freezing is an effective option. Place the sauce flat in a zipper storage bag or freeze it in small portions using an ice tray. This allows for easy portioning, letting you thaw only the amount needed. The estimated shelf life for frozen homemade dipping sauces is about one month.

Storage summary

Room temperature - Not recommended.

Refrigerated - 2 weeks in a sterilized container.

Frozen - Up to a month.

pouring homemade tsuyu sauce into dipping dish next to a plate of shiitake, kombu and bonito flakes (dashi ingredients)

Homemade Tsuyu Sauce (Multipurpose Dashi-Based Sauce)

Yuto Omura
How to make versatile homemade Japanese Tsuyu Sauce from scratch. Great for adding umami flavor to noodles, broths and sauces.
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Prep Time 20 minutes mins
Cook Time 5 minutes mins
Soaking time 12 hours hrs
Total Time 12 hours hrs 25 minutes mins
Course Sauce
Cuisine Japanese
Servings 200 ml

Ingredients
 
 

  • 100 ml mirin
  • 100 ml soy sauce
  • 1 tsp sugar
  • 3 g bonito flakes - (katsuobushi)
  • 5 g dried kelp(s) - (kombu)
  • 3 g dried shiitake mushroom(s)
  • 3 g dried sardines - (niboshi)
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Instructions
 

  • Pour 100 ml mirin into the saucepan and boil for 30 seconds over a medium/medium-high heat.
    cooking mirin and sugar in a saucepan to make tsuyu sauce
  • Add 100 ml soy sauce and 1 tsp sugar and boil for another 30 seconds.
    cooking tsuyu sauce in a saucepan
  • Transfer to a heatproof container and allow to cool to room temperature.
    tsuyu sauce cooling in a heatproof container
  • Once cooled, pour into a jar or sealable container and add your choice of dashi ingredients. (Classic: 3 g bonito flakes and 5 g dried kelp(s). Plant based: 3 g dried shiitake mushroom(s) and 5 g dried kelp(s). Rich: 3 g bonito flakes, 5 g dried kelp(s) and 3 g dried sardines)
    tsuyu sauce made with three types of dashi ingredients (left to right) shiitake, niboshi (dried sardines), katsuobushi and kombu (bonito flakes and dried kelp)
  • Seal the container and soak in the refrigerator overnight (at least 12 hours).
  • After 12 hours, remove the dashi ingredients. (If you used bonito flakes, I recommend using a fine mesh sieve to strain and squeeze them to prevent wasting any sauce.) Transfer to a sterilized container for storage and keep it in the fridge.
    Straining dashi ingredients to make tsuyu sauce
  • Enjoy using your homemade tsuyu sauce for dipping, noodle soups and broths!
    Homemade multipurpose tsuyu sauce in a measuring jug

Notes

This sauce can be kept in the refrigerator for up to 2 weeks.
See the post above on how to use tsuyu and how much water to mix for different dishes/uses.
Click here to add your own private notes.
Keywords japanese tsuyu sauce, mentsuyu, noodle dipping sauce, tsuyu, vegan tsuyu, vegetarian tsuyu
Tried this recipe?Let us know what you thought!

Recommended Tsuyu Sauce If You Want to Buy Store-bought One

In this article, I introduced a recipe for making homemade tsuyu sauce at home, but few Japanese families make their tsuyu from scratch since tsuyu of all kinds is available at supermarkets.

In fact, it is sometimes more convenient to buy store-bought ones for small quantities, so in this section, I will introduce some recommended commercial tsuyu brands.

  • Kikkoman Hon-Tsuyu - Classic choice! All dashi ingredients are made from Japanese bonito flakes, tuna flakes, sardine flakes, Soda bonito flakes, and ma-kombu (Japanese kelp), giving it a rich, umami flavor. While the dashi has a rich aroma, the sweetness is kept to a minimum, and the beautiful color makes it a truly versatile tsuyu sauce that is easy to use.
  • Ninben Tsuyu no Moto - Another classic tsuyu sauce with an iconic orange label! This best-selling tsuyu has been a favorite of Japanese families for decades. Compared to Kikkoman's Hon-tsuyu, it has a sweeter taste and almost no sourness.
  • Yamaroku Kikutsuyu - Compared to the above two products, this kikutsuyu is a premium product of higher quality. It is more expensive, but it is based on Yamaroku's Kikubishio soy sauce and is made with kelp from Rausu and dried bonito flakes from Makurazaki, and sweetened with sugar from Tanegashima to create an aromatic broth. If you are looking for a higher grade of tsuyu, give it a try!

Recipe Ideas Using Tsuyu Sauce

I often use tsuyu in my cooking; it has a more complex flavor than soy sauce alone. Here are some popular recipes that use tsuyu!

Use your homemade tsuyu in these recipes!
  • Takoyaki (Fried Octopus Balls)
  • Okaka Onigiri (Bonito Flake Rice Ball)
  • Ajitama Egg (Marinated Ramen Eggs)

FAQ

What is tsuyu sauce made of?

Tsuyu is made by adding dashi to a seasoning called kaeshi, a mixture of soy sauce, mirin (sweet cooking sake), and sugar.

What is a substitute for tsuyu sauce?

When used in small quantities in cooking as a seasoning, soy sauce can be used instead.

Is tsuyu a soy sauce?

No, tsuyu sauce is made based on soy sauce, but it is sweeter because it contains mirin and sugar and has more depth than soy sauce because of its dashi elements.

Is tsuyu the same as dashi?

While tsuyu is seasoned with soy sauce and mirin, dashi is just a flavor extract from dried bonito flakes and kelp, so it is not salty on its own.

What does tsuyu taste like?

While tsuyu has a strong soy sauce flavor, it is also sweet because of mirin and sugar, and the dashi gives it a deep umami taste.

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