The primary ingredient in a Philly cheesesteak is thinly sliced beefsteak, typically ribeye, which is known for its tenderness and flavor. The beef is cooked on a griddle and often topped with melted cheese, most commonly Cheez Whiz, provolone, or American cheese. Onions are also a common addition, either sautéed or raw, which enhances the savory flavor of the sandwich. The mixture is served in a long, soft hoagie roll, making it a staple of Philadelphia cuisine. The Philly cheesesteak has become an iconic dish, widely recognized and enjoyed beyond its city of origin.