Lampredotto is a popular street food in Florence, made from the fourth stomach of a cow. The stomach is boiled until tender and then thinly sliced. The slices are typically served in a crusty roll, known as a panino, and topped with a green sauce made from parsley, garlic, and anchovies. Lampredotto is a unique and flavorful meat dish that is beloved by locals and visitors alike. It is a must-try for those looking to experience the authentic flavors of Florence.