A lamb sandwich is a type of sandwich made with lamb as the main ingredient. It is usually served on a bun or pita bread and can be topped with various condiments such as lettuce, tomatoes, onions, and sauces. The term 'gyro' is a Greek dish made of meat cooked on a vertical rotisserie and served in a pita wrap with vegetables and tzatziki sauce. Gyro is also sometimes used to refer to a type of lamb sandwich.