This simple awase dashi stock made with dried shiitake mushrooms and dried kelp kombu will add umami and authentic flavour to your Japanese cooking and is suitable for vegans and vegetarians!
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What is dashi?
Dashi is a type of Japanese stock. It can be made from a number of different ingredients, much like how stock used in Western cooking can be from chicken, beef, vegetables, fish etc. Despite this, dashi can’t be compared to meat stocks in flavour, it’s totally unique!
Dashi is one of the fundamentals in Japanese cooking. It adds umami and depth to a recipe whilst still being subtle, and it gives each dish that distinct and authentic Japanese flavour.
It is often used for noodle broths and soups, but it can also be used in sauces or dressings too.
Check out our recipe for concentrated dashi sauce “tsuyu”. It’s great for using on donburi or as a dipping sauce for noodles.
Ways to Make Dashi
There are a number of ways to make dashi.
- Dashi from scratch - Buy individual ingredients and soak/boil
- Dashi powder - Instant, sprinkle on cooking or boil in water
- Dashi in a bag - Ingredients are already assembled in a teabag, boil in water
The dashi powder and dashi bags are super convenient, but the problem is they almost always contain "katsuobushi" bonito flakes which is made from skipjack tuna. If you want to make vegetarian or vegan dashi, it's better to make it from scratch and that's what I'm gonna show you today!
Dashi Base
The most common ingredients used in dashi are:
- Kombu (dried kelp) - I use Hidaka kombu
- Katsuobushi (bonito fish flakes)
- Dried Shiitake Mushroom
- Niboshi (usually dried sardines or anchovies)
In today’s recipe we are going to use kombu and dried shiitake mushrooms, so let’s learn a little bit more about these ingredients.
Kombu
Kombu (昆布) is a dried edible kelp. When cut up small and seasoned, it makes a very delicious onigiri filling!
When we use it to make dashi, we soak it in cold water first. It needs to be rehydrated in order to extract the flavour.
This usually takes about 30 minutes but some people leave kombu to soak overnight for maxium flavour.
You can purchase it on Amazon here. (I like Hidaka brand).
Dried Shiitake Mushrooms
Dried Shiitake mushrooms are a delicious vegetarian/vegan friendly option for making dashi.
Like kombu, they need to be rehydrated by placing them in cold water. Dried shiitake somehow have a deeper flavour than fresh shiitake and once they are soaked, the delicious flavour is extracted making a tasty dashi!
Dried shiitake can become bitter if it's heated too quickly. Our recipe recommends soaking it over night in cold water for the best flavour.
Soaking over night
For both kombu and dried shiitake mushrooms, I recommend soaking over night if possible. But of course, sometimes you don't have time!
It's okay, you can just soak them until softened. This takes about 30 minutes. The flavour won't be so deep, but it still works if you are pushed for time.
What is "Awase Dashi"?
Awase comes from the Japanese verb “awaseru” (合わせる) which means “to combine”. So awase dashi doesn’t refer to only one kind of dashi. It is any dashi that uses more than one ingredient.
Today’s awase dashi is made from kelp and dried shiitake mushrooms which is a flavourful combination dashi that can be enjoyed by vegans and vegetarians too!
We use this dashi stock in our miso soup recipe here, check it out!
How to store
Surprisingly, kombu and shiitake dashi doesn't store well, despite being made from dried ingredients. Not only does the taste deteriorate quickly, but it can go bad and turn sour. Because of this, I recommend keeping this dashi in a sealed container in the fridge for no longer than 3-4 days. This is a good option if you plan to make miso soup or hot pots using the same dashi for a few days in a row.
If you don't plan to use it within this time frame, you can freeze it instead and it will be good for up to one month! If you like to add small amounts of dashi to cooking then pouring it into an ice cube tray is a great option. If you only use it for soups, divide it into individual portions and store it in ziplock bags or something similar. (I like using ziplock bags so that each portion lays flat and doesn't take up too much freezer space).
So to summarise, the storage options for homemade shiitake and kombu awase dashi are:
- Refrigerate for 3-4 days
- Freeze for up to 1 month
Printable recipe
Shiitake and Kombu Awase Dashi (vegan)
- Total Time: 40 minutes
- Yield: 1 litre
Description
How to make 1 litre of simple, umami packed Japanese dashi stock made with "kombu" dried kelp and dried shiitake mushrooms. Suitable for vegans and vegetarians.
Ingredients
- 1 litre (1.05 quarts) cold water
- 2-3 sheets Kombu dried kelp (12g)
- 4 Dried shiitake mushrooms (8g)
Instructions
- In a pot, add 1 litre (1.05 quarts) cold water with 2-3 sheets of dried kelp kombu and 4 shiitake mushrooms.
- Put a lid on and leave to soak for at least 30 minutes. (preferably over night)
- Once the kombu and shiitake have softened and released their flavour, remove the shiitake and put the pot on a medium heat. (You can discard the shiitake or cut them up and incorporate them into your cooking if you don't want to waste them.)
- Once the water starts to bubble, remove the kombu and discard.
- Simmer the dashi for 5 minutes.
- Use as a soup base, noodle broth base or to make a sauce!
- Prep Time: 30 minutes
- Cook Time: 10 minutes
- Category: Dashi
- Method: Simmering
- Cuisine: Japanese
Keywords: How to make dashi, how to make dashi from scratch, what is dashi, dashi stock, dashi broth, dashi ingredients, kombu, dashi soup,dried kelp, dried shiitake, kombu dashi, vegan dashi, vegetarian dashi, dashi recipe,
Tamara MacGinty
How long can you keep this dashi in the refrigerator? I'm a single person, going through a litre in a day might be a big ask.
Yuto Omura
Hi Tamara,
That's a great question and I'll update the post to let my other readers know. I recommend keeping this dashi in the fridge for no longer than 3-4 days, you could also pour it into an ice cube tray or divide it into portions in ziplock bags and keep it in the freezer for up to 1 month.
Thank you for getting in touch!