Leeks are a vegetable related to onions and garlic, characterized by their long, cylindrical stalks and white bulb. They have a mild, sweet flavor with a subtle onion-like taste. Leeks are commonly used in soups, stews, and casseroles, adding depth and flavor to dishes. They can also be sautéed, roasted, or grilled as a side dish or added to salads for a crisp texture. Rich in vitamins, minerals, and antioxidants.