Bladderwrack

Portuguese King Denis, nicknamed the Farmer King, recognized the value of Atlantic seaweed harvests as early as the 1300s. He regulated how coastal communities could collect bladderwrack, establishing one of the earliest documented systems for sustainable marine resource management. Before iodine was isolated in 1811, physicians administered dried bladderwrack to patients suffering from goitre, relying on its naturally high mineral content. Coastal communities across Northern Europe also burned bladderwrack to produce soda ash, an essential ingredient in making glass, soap, and paper for centuries. Today, this ancient seaweed finds new purpose in fine perfumery, though it remains a relatively rare material used primarily by houses committed to authentic marine accords.