The Ultimate Philly Food Glossary | Eater Philly
"I note that Pat Olivieri of Pat’s King of Steaks in South Philadelphia invented the cheesesteak in 1930; the classic is a long Amoroso roll stuffed with thin-sliced, salt-and-pepper seasoned ribeye and cheese (preferably provolone, American, or Whiz) with the option of grilled onions—ask 'wit' or 'witout'—though notable variations now use chicken, salmon, or brisket." - Ernest Owens
