"Seaweed powder" refers to a type of dried and ground seaweed, which can be used in various products and recipes for its nutritional benefits and unique flavor. Full definition
The result was a brownish - green seaweed powder that could be used industrially as a salt substitute in the future. (sciencedaily.com)
It's similar to agar agar, a seaweed powder, and it's even allowed as an ingredient in the USDA National Organic Program. (insteading.com)
Contra What: Monkfish Dusted With Matcha Price: Part of a $ 55 tasting Monkfish gets roasted on the bone, dusted with matcha and seaweed powder, and then topped with roasted celeriac, horseradish, and a roasted - fish - bone sauce. (grubstreet.com)