[Extracted from the web page of www.lifestyle.iloveindia.com] Leeks are a member of the Alliaceae family and are scientifically known as Allium porrum. The main edible portion of the vegetable is the stem or the stalk which is nothing but a bundle of leaf sheaths and also the white onion base. They have a mild onion like taste and are quite crunchy and firm in their raw forms. Different varieties of the vegetable are available and are broadly categorized as the summer varieties and the overwintering leeks. Two of the most popular and commonly cultivated varieties are the Tadorna Blue and King Richard. Physically, they resemble scallions but are much bigger and are usually around 12 inches in length and around 2 inches in diameter. They have a small bulb like structure and a cylindrical stalk of superimposed leaves. Being a high source of vitamins and minerals, the vegetable plays an important role in providing defense against a number of ailments and dis...