Leeks are a member of the onion family and have a mild, sweet flavor with a slightly onion-like taste. They have a long cylindrical shape with white bulbous roots at the bottom and dark green leaves at the top. Leeks are versatile vegetables that can be used in a variety of dishes and cuisines. They are commonly used as an aromatic base in soups, stews, and sauces, providing a subtle onion flavor. Leeks can also be sautéed, roasted, or grilled as a side dish or added to salads, quiches, and pasta dishes for added texture and flavor.