To make laver bread, puréed laver (which you can buy in tins) is combined with steel-cut oatmeal in a 4 to 1 ratio, then formed into cakes about 2 inches (5 cm) wide, just under 1 inch (2.5 cm) thick. The cakes are then pressed in more oatmeal to coat them, and fried up in bacon fat, butter or oil until they are golden brown. They are meant to be served hot.
Oftentimes, just the seaweed itself is called “laver bread.” If you see a recipe calling for Laverbread as an ingredient, it almost certainly means “laver.”