The main ingredient in a traditional Greek gyro is usually pork, although chicken, lamb, or beef can also be used. Gyros are made from meat that is marinated and cooked on a vertical rotisserie. Once cooked, the meat is shaved off in thin slices and served wrapped in pita bread, typically accompanied by toppings such as tomatoes, onions, and tzatziki sauce, a yogurt-based condiment. Gyros are a popular fast food choice in Greece and beyond, providing a flavorful and satisfying meal that reflects the culinary traditions of Greek cuisine.