3 cups chopped greens (broccoli rabe, kale, or collards)
½ cup chopped scallions
1 tbsp fish sauce
1–2 tsp kosher salt
1 tbsp sugar
1 block silken tofu, halved then cut into squares
4 cups cilantro, or combination cilantro and basil
1 lemon
Recipe
Make dashi: wipe kombu with a damp cloth, break into pieces. Place in a pot with water. Bring almost to a boil, then remove kombu. Add garlic, bonito flakes, chili flakes, and shiitakes. Boil 30 seconds. Turn off heat; steep 10 minutes. Drain through a colander into a bowl. Return dashi to pot. (Or use 4 quarts instant dashi.)
Add miso paste and bring to a boil, whisking to incorporate.
Add greens and scallions; cook 3 minutes.
Add fish sauce, salt, and sugar. Lower to a simmer. Gently add tofu cubes. Cook at a bare simmer 10 minutes. Turn off heat. Add herbs.
Just before serving, squeeze lemon juice into the soup to taste. Serve immediately.