Laver bread is a Welsh bread made from seaweed. "Laver" refers to the type of seaweed most often used by Welsh cooks to make the bread.
Cooks can pick Laver wild, though some grocery stores sell it dried. Because it is also popular in Japanese culture, cooks may be able to find it at Asian markets or on the Asian food aisle at the grocery store. If Laver cannot be found, the flat sheets of seaweed used for sushi, called nori, can be used in its place. Since the bread calls for a paste, fresh Laver needs to be cooked down while dried Laver needs to be rehydrated and pureed.