Miso Soup with Tofu and Wakame
Miso soup looks simple because the technique is mostly restraint. The entire bowl rests on a kombu dashi built from one strip of dried kelp, and the rule that actually matters is temperature: miso goes in only after the heat is off. A hard simmer clouds the broth, dulls the fermented complexity, and kills some of the live cultures a good miso carries. Whisking a ladle of hot broth into the miso first, before it meets the rest of the pot, is what keeps every bowl clear and smooth instead of gritty.
Ingredients
- 1 piece Kombu, 4 inch
- 14 oz Silken tofu, drained and cut into 1/2 inch cubes
- 2 tbsp Wakame, dried
- 3 Scallions, thinly sliced, white and green kept separate
- 3 tbsp White miso
Method
- Put the kombu in a pot with 4 cups (960 ml) water and let it soak for 15 minutes; this pulls the glutamates out before any heat touches it. Set the pot over low heat and warm it slowly toward a simmer, about 8 minutes. Lift out the kombu the moment small bubbles form at the edges. A rolling boil turns kombu slick and faintly bitter, and that flavor has no place in a clear soup.
- While the dashi heats, cover the wakame with cold water in a small bowl. It rehydrates and roughly triples in size within 5 minutes. Drain it and squeeze out the excess water so it does not dilute the broth.
- Return the dashi to low heat and add the scallion whites. Simmer for 1 minute to soften their bite.
- Add the tofu cubes and warm gently for 2 to 3 minutes, just until heated through. Keep the pot at a bare simmer: a hard boil knocks the cubes apart and clouds the broth.
- Stir in the drained wakame and warm through for another minute.
- Turn off the heat. Ladle about 1/2 cup of the hot broth into a small bowl, whisk in the miso until smooth, then stir the slurry back into the pot. Whisking it separately keeps lumps out of the soup and keeps the miso off direct heat, which matters: miso is alive with cultures that a hard simmer kills, along with some of its flavor.
- Ladle into bowls and scatter the scallion greens over the top. Serve right away, while the tofu is still warm and the wakame still has bite.
Nutrition
Estimated per serving: 75 calories, 6 g protein, 2 g fiber. Computed from USDA FoodData Central reference values for the main ingredients. This is an approximation, not a laboratory measurement.
Cost per serving is estimated from US national-average retail prices for cheap staple forms, using BLS dried-bean prices and USDA produce prices. Prices vary by store and season, so treat it as a guide, not a receipt.