Leeks have a mild, onion-like taste. In its raw state, the vegetable is crunchy and firm. The edible portions of the leek are the white base of the leaves (above the roots and stem base), the light green parts, and to a lesser extent the dark green parts of the leaves. Leeks are eaten fresh or cooked and added to other dishes, providing a sweet and somewhat earthy flavor that is much milder than an onion. A leek is used to enhance the flavor of salads, soups, stews, quiches, or meat and vegetable casseroles.