Miso Soup

One of the quintessential Japanese flavor enhancers, miso paste, plays a prominent role in this classic simple soup. Ichiban dashi (first stock) is the light, flavor-rich broth made from kelp (kombu) and dried bonito flakes (katsuoboshi).

Miso Soup (fish stock)
Yield: 1 quart/liter
  • 4 cups/1L water
  • 4 grams (2" by 5" or 10 square inches) kombu (dried kelp)
  • 5 grams (about ½ cup, 125ml) katsuoboshi (bonito flakes)
  • 3 Tbsp./45 ml red miso
  • 2 scallions
  • 20 grams enoki mushrooms
  1. Scrub kombu lightly under cool water to remove debris (pollution or small sea creatures).
  2. Add kombu to water in a pot and let soak for about 15 minutes.
Prep Veg
  1. Cut scallions into ⅛" slices.
  2. Trim dirt off enoki mushrooms then cut into 1" pieces.
  3. Turn pot on medium-high heat. Right before the water starts to boil (bubbles starting to break around the edge of the pot), remove kombu and scatter the katsuobushi over the surface of the water.
  4. Let broth return to boil, then turn off heat ant let sit 5 minutes.
  5. The bonito will have sunk to the bottom of the pot. Strain the stock through a tight mesh strainer. You now have dashi.
  6. Ladle 1 cup dashi into a small bowl. Let cool slightly, then add miso and whisk until smooth.
  7. Add the miso mixture back to the dashi and whisk to combine. Return to a slight simmer, being careful not to boil the mixture.
  8. Add scallions and mushrooms and cook for another minute Remove from heat, ladle into soup bowls and serve immediately.


We’ve also had good luck with a vegan dashi broth, made with shiitake mushrooms as an alternate umami source.

May we suggest…

Frugal Fermenter tip: You could reuse the soaked kombu and bonito and make a second stock (niban dashi) from it. It won’t have as much flavor as the first stock, but it’s a great way to honor your ingredients and get the most from them. Second stock is typically used an ingredient for other dishes like soups, marinades, etc. rather than for miso soup.

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