The Philly cheesesteak dates to the 1930s, generally credited to brothers and hot dog vendors Pat and Harry Olivieri. The original version was an experiment with cheap steak and fried onions that caught on quickly and dashed the brothers’ hot dog business. The original didn’t include cheese. While Cheez Whiz is now the most popular cheese added, the original was provolone.
Geno’s Steaks opened across the street from Pat’s King of Steaks in 1966; both still flourish today. David Cathey, Food Editor