A bacon sandwich (also bacon sarnie, bacon butty/buttie, bacon bap, bacon barm or bacon cob (UK) and bacon sanger or piece ‘n bacon (Scotland) ) is a form of sandwich made from cooked bacon between two slices of bread, usually buttered. Often some form of sauce, such as tomato ketchup or brown sauce, is included. Bacon sandwiches are an all-day favourite throughout the United Kingdom. Other ingredients such as sausage, cheese, fried or scrambled eggs are often added. A variant of the bacon sandwich is the BLT (bacon, lettuce and tomato) sandwich popular in North America.