Turn your old wooden barrel into a refreshing mint garden that will add a burst of flavor to your beverages and culinary creations. Mint is a fast-growing herb that thrives in containers, making it perfect for a barrel garden. Fill the barrel with rich, well-draining soil and plant mint seedlings or cuttings. Ensure that the barrel is placed in a partially shaded area, as mint prefers some protection from direct sunlight. Water the garden regularly to keep the soil moist but not waterlogged. Harvest the mint leaves as needed and enjoy the invigorating taste and aroma of fresh mint.