The leaves of the mint plant are the part that is commonly used in cooking. They have a refreshing and aromatic flavor that can add depth and complexity to a wide range of dishes. Mint leaves are often used in salads, teas, cocktails, and desserts, as well as in marinades for meat, poultry, and seafood. Mint leaves are also a popular ingredient in many Middle Eastern, North African, and South Asian cuisines, where they are used to add flavor and color to curries, stews, and pilafs. Overall, the leaves of the mint plant are a versatile and delicious ingredient that can enhance the taste of many dishes.