- 1 piece kombu (dried kelp) (4 x 4 inches 10 x 10 cm per piece)
- 5 cups water (for the kombu)
- 3 dried shiitake mushrooms
- 1 cup water (for the shiitake)
- 7 oz firm tofu (½ 14-oz block)
- ½ package konnyaku (konjac) (4.6 oz 130 g)
- 7 oz daikon radish (2 inches 5 cm)
- 3.5 oz carrot (1 medium)
- 3 pieces taro (satoimo)
- 3.5 oz gobo (burdock root) (½ gobo)
- 1 Tbsp toasted sesame oil
- 3 Tbsp sake
- ½ tsp Diamond Crystal kosher salt
- 2 Tbsp soy sauce
- 2 green onions/scallions
- shichimi togarashi (Japanese seven spice) (optional)
- Japanese sansho pepper (optional)
- Store any leftovers in an airtight container or covered pot in the refrigerator for up to 2–3 days. For best flavor, prepare the kombu dashi the night before by soaking the kombu overnight. Optional garnishes like shichimi togarashi and Japanese sansho pepper add a nice spicy kick if you prefer.