A common ingredient in South East Asian cookery, both the bulbous base and the long lemon flavored leaves are used. The base should be peeled and chopped finely before use. It freezes well. Use anywhere you want an aromatic lemony flavour, it is especially nice with fish, chicken, rice and vegetable dishes. Try adding some leaves to water as you cook rice, or wrapping around a whole fish before cooking. The leaves are generally discarded just before serving like bay leaves. A couple of leaves added to your tea pot when making your usual tea makes a delicious variation. For most people herbs are eaten in small quantities so they are more important for their taste than nutritional value. Many herbs are reputed to have different health giving properties.