The main ingredient in a traditional gyro is meat, typically lamb, beef, or chicken, that is seasoned, stacked, and cooked on a vertical rotisserie. The meat is thinly sliced and usually served in a pita bread along with various toppings. Common accompaniments include tomatoes, onions, and a yogurt-based sauce known as tzatziki, which adds creaminess and flavor. Gyros originated in Greece and have become popular in many other countries, often enjoyed as street food or in casual dining. The combination of flavors and textures makes gyros a beloved and satisfying meal option.