<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> A cheesesteak, also known as a Philadelphia cheesesteak, Philly cheesesteak, cheesesteak sandwich, cheese steak, or steak and cheese, is a sandwich made from thinly sliced pieces of beefsteak and melted cheese in a long hoagie roll . A popular regional fast food, it has its roots in Philadelphia, Pennsylvania, United States . </P> <P> The cheesesteak was developed in the early 20th century "by combining frizzled beef, onions, and cheese in a small loaf of bread", according to a 1987 exhibition catalog published by the Library Company of Philadelphia and the Historical Society of Pennsylvania . </P>

What kind of meat is philly cheese steak made out of