The primary ingredient in a gyro is meat, commonly lamb, beef, or chicken, which is typically cooked on a vertical rotisserie. The meat is seasoned with a blend of spices and herbs, resulting in a savory flavor. Once cooked, the outer layer of the meat is sliced thinly and typically served in pita bread along with various toppings like tomatoes, onions, and tzatziki sauce, a yogurt and cucumber sauce that adds a refreshing element. Gyros are a popular street food in Greece and have gained immense popularity worldwide due to their delicious taste and portability.