Miso Soup Recipe

1. Prepare dashi

If using instant dashi, dissolve the appropriate amount in 4 cups hot water and bring to a gentle simmer in a medium saucepan. If making quick kombu-katsu dashi: place 4 cups water and a 4- to 6-inch piece kombu in the saucepan, heat slowly to just before simmer, remove kombu, then add 1 cup bonito flakes, simmer 1 minute, remove from heat and strain after 2–3 minutes to yield clear dashi.

2. Keep the dashi at a gentle simmer (not rolling boil) — boiling will degrade delicate miso flavor. Reserve 1–2 tablespoons of hot dashi in a small bowl for dissolving miso.

3. Scoop 3 tablespoons miso paste into the reserved hot dashi and whisk or stir until fully smooth (use a small whisk, chopstick or spoon). Do not dump miso directly into boiling broth to avoid clumping and loss of flavor.

4. Turn heat to low. Ladle a small amount (about 1/2 cup) of warm dashi into the miso mixture again to temper, then pour the dissolved miso back into the pot. Keep the soup just below simmer and do not boil after miso is added. Taste and add up to 1/2 teaspoon light soy sauce if you want deeper umami/saltiness.

5. Rehydrate wakame: place 2 tablespoons dried wakame in a small bowl with 1/4 cup warm water for 3–5 minutes until expanded. Drain and gently squeeze out excess water; chop into bite-size pieces if large.

6. Prepare mushrooms while dashi is heating: trim shiitake stems and thinly slice caps (about 1/4-inch). Separate shimeji clusters into individual stems or small clusters.

7. Add sliced shiitake and shimeji mushrooms to the simmering dashi before adding miso (when liquid is hot but not boiling). Simmer mushrooms gently for 3–4 minutes until tender and fragrant. This extracts mushroom flavor into the broth.

8. After the miso has been dissolved back into the pot (see Broth steps), add the rehydrated wakame and stir gently to combine. Do not boil after this point.

9. Cut tofu into 1/2-inch cubes and gently slide into the pot after mushrooms have softened and just before or right after adding the dissolved miso. Warm tofu in the hot broth for 1–2 minutes — handle gently so cubes keep their shape.

10. Taste the soup one more time and adjust seasoning with a touch more miso (dissolved in a spoonful of broth) or up to 1/4 teaspoon soy sauce if needed. Keep temperature low and avoid boiling.

11. Turn off heat. Sprinkle the thinly sliced green onions over the soup. Let the soup rest 30 seconds to 1 minute to allow flavors to meld.

12. Ladle the miso soup into 4 small bowls, ensuring each bowl gets an even distribution of tofu, shiitake, shimeji, and wakame. Serve immediately while warm.