In Britain and Ireland, cod and haddock appear most commonly as the fish used for fish and chips, but vendors also sell many other kinds of fish, especially other white fish, such as pollock, hake or coley, plaice, skate, and ray (particularly popular in Ireland); and huss or rock salmon (a term covering several species of dogfish and similar fish). In traditional fish and chip shops several varieties of fish are offered by name ("haddock and chips"), but in some restaurants and stalls "fish and chips", unspecified, is offered; it is increasingly likely to be the much cheaper basa. In Northern Ireland, cod, plaice or whiting appear most commonly in 'fish suppers'—'supper' being Scottish and Northern Irish chip-shop terminology for a food item accompanied by chips. Suppliers in Devon and Cornwall often offer pollock and coley as cheap alternatives to haddock.