Pacific Kombu
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What it is
Pacific kombu is a type of edible kelp, a large brown seaweed that grows in cold, shallow ocean waters. It is harvested from the wild or cultivated in underwater farms, primarily off the coasts of Japan, Korea, and China. After harvesting, it is typically dried for preservation and to concentrate its flavor.
Why it's used
Kombu is used as a flavoring agent, particularly in Japanese cuisine, to add a savory, umami taste (known as 'kombu dashi'). It is also a source of natural glutamates. It is commonly found in broths, soups, and noodle dishes.
Health notes
Pacific kombu is generally recognized as safe (GRAS) by the FDA for use as a food ingredient. It is a natural source of iodine, and excessive intake of iodine can affect thyroid function. JECFA has evaluated kombu and established guidance on its use. Some studies suggest potential benefits from compounds in seaweed, while others note concerns about heavy metal accumulation depending on the growing environment.
Allergen info
Kombu is a type of seaweed and is not derived from any of the nine FDA major allergens. It does not contain gluten.