Updated 2026-10-14 · Reviewed for accuracy by Qingdao Hengweida Trading Co., Ltd.

What Is Kombu and How Is It Used in Food Processing?

Kombu is edible kelp used for broth, simmered foods, and processing. It is not nori. Buyers should confirm species, cut, and dryness rather than using sushi-nori grades.

Direct answer

Kombu is kelp. Nori is sheet seaweed used for sushi and related wraps. Food processors use kombu for dashi-style broth, soup bases, simmered dishes, and further cutting or milling. Do not order kombu when the process needs a nori wrap.

What processors should confirm

Species if known, whole strip versus shredded, dryness, pack weight, and whether the kombu will be extracted, cooked, or packed as a visible ingredient.