Kombu

Kombu is an edible brown seaweed, especially important in Japanese cuisine.

Kombu is an edible brown seaweed, especially important in Japanese cuisine. It is widely used to make dashi, a Japanese soup stock, and is also eaten in other East Asian food traditions. The term can refer to several species of kelp, most commonly in the family Laminariaceae.

Description

Kombu is a thick edible seaweed or kelp used as food and seasoning. It is most closely associated with Japanese cuisine, but it is also used in Korea and China under local names. The term can refer to several species of kelp, most commonly in the family Laminariaceae.

Culinary use

Kombu is best known for making dashi, a foundational Japanese broth. It is also used in simmered dishes, preserved foods, and as a flavouring ingredient. Kombu is valued for its natural glutamate content, which gives foods an umami flavour.

Species and naming

The term kombu is a culinary name that can cover multiple kelp species, not just one taxon. Sources describe it as belonging mainly to the family Laminariaceae and, in some contexts, the genus Laminaria or Saccharina species.

Harvesting and production

Kombu is commonly farmed or harvested in cold coastal waters, especially in northern Japan around Hokkaido and Tohoku. Some kombu used for dashi is grown for about two years before being harvested in summer and early autumn. It is usually sold dried and rehydrated before use.