Description: The leek is a vegetable that belongs along with onion and garlic. Rather than forming a tight bulb like the onion, the leek produces a long cylinder of bundled leaf sheaths. Leeks have a mild onion-like taste. It is crunchy and firm when raw. The edible portion of the leek is the white part at the base of the leaves and the light green part of the leaves. Commonly used in: Leeks are most popularly used in stocks to add flavour. They can also be eaten raw in salads. Health benefit: Leek contains protein, vitamin C, sulphur, essential oil and is low in sodium.