Miso Soup (Tofu & Seaweed)

This is the foundational recipe for authentic Japanese miso soup. It comes together in about 10 minutes and relies on a delicate balance: the rich umami of the dashi stock, the savory depth of the miso paste, and the soft textures of silken tofu and wakame.

Ingredients

Yield: 4 Servings | Prep time: 5 mins | Cook time: 5 mins

Ingredient	Quantity	Notes
Dashi (Soup Stock)	4 cups	Awase dashi (kombu + bonito) is traditional. Can substitute water + 1 tsp instant dashi powder.
Miso Paste	3 to 4 tbsp	White miso (Shiro) is sweeter and mild; Awase miso (mixed) is earthier and more robust.
Silken Tofu	1/2 block (~7 oz)	Carefully diced into 1/2-inch cubes.
Dried Wakame Seaweed	1 tbsp	Do not over-measure — it expands significantly in liquid.
Scallions (Green Onions)	2 stalks	Thinly sliced for garnish.

Instructions

1.Hydrate the Wakame :Optional but recommended.

Place the dried wakame in a small bowl of water for 5 minutes until expanded, then drain. You can add it directly to the pot later, but hydrating it first prevents the seaweed from soaking up too much of your broth.

2.Heat the Broth :

Pour the dashi into a medium saucepan and bring it to a gentle simmer over medium heat.

3.Add the Tofu and Wakame :

Gently slide the cubed tofu and the drained wakame into the simmering dashi. Let everything heat through for 1 to 2 minutes. Do not let it come to a rolling boil, or the fragile tofu may break apart.

4.Remove from Heat :Crucial for flavor.

Turn the stove completely off or pull the saucepan off the burner.

5.Dissolve the Miso :

Place the miso paste into a ladle or a small fine-mesh strainer partially submerged in the warm broth. Use a spoon or chopsticks to whisk the miso until it is completely dissolved, then stir it into the rest of the soup. Dropping a clump directly into the pot makes it very difficult to mix smoothly.

6.Garnish and Serve :

Ladle the soup into individual bowls, top generously with the fresh scallions, and serve immediately while hot.

The Golden Rule: Never let the soup boil once the miso paste has been added. High heat alters the delicate flavor, making it slightly bitter, and kills the beneficial probiotics in the fermented paste.