Shepherd's pie is a classic British dish that is made with minced lamb or beef, mixed with vegetables such as carrots, peas, and onions, and topped with mashed potatoes. The meat and vegetable mixture is cooked in a rich gravy, giving the dish a savory and comforting flavor. Shepherd's pie is often served as a main course and is a popular choice in British food restaurants. It is a delicious and filling dish that is perfect for colder months.