This "city" sandwich consists of thin slices of beef, slices of American, & often sauteed onions on a roll
[DOC] [TLE] Cheesesteak - Wikipedia [PAR] 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.