BretT's comments

"The white powder on kelp contains mannitol and is considered not only healthy, but also tasty. (1) I agree with the other comments. Usually packaged, dried kelp won't contain any dirt and should not need wiping. (2) Sources: 1. "Flavor and Seasonings - Dashi, Umami, and Fermented Foods" - Japanese Culinary Academy 2. Elizabeth Andoh"
in Kelp (Dasima) — Jun/17