Dashi Stock

Store homemade dashi in an airtight container in the refrigerator for up to 3 days. It can also be frozen for longer storage.

For a vegetarian or vegan dashi, omit the bonito flakes and use only kombu and dried shiitake mushrooms.

Don't boil the kombu for too long, as it can become bitter. Aim to steep it until just before the water boils.

Instant dashi granules or powders are a convenient alternative, though they may have a stronger flavor and added seasonings.

Miso

Soy sauce

Mirin

Tofu

Noodles (udon, soba, ramen)

Seafood

Vegetables

Boiling kombu until it becomes bitter. Remove the kombu before the water reaches a rolling boil.

Using old or dried-out kombu and bonito flakes, which will result in a weak flavor.