The term originally referred to skirt steak, the cut of beef first used in the dish.[3] Popular alternatives to skirt steak include chicken and other cuts of beef, as well as vegetables instead of meat.[4][5] In restaurants, the meat is usually cooked with onions and bell peppers. Popular condiments include shredded lettuce, sour cream, guacamole, salsa, pico de gallo, shredded cheese, refried beans, and diced tomatoes