Also known as citronella grass, lemon grass has long, green stalks and serrated leaves. The stalks have a lemony aroma and flavour tinged with ginger. Only the lower 4 to 6 inches of the stalk are used. Lemon grass is common in Thai and Southeast Asian cooking. It enhances the flavour of curries, stews, soups, chicken, and seafood. Make sure to remove the lemon grass before serving. Fresh lemon peel and grated ginger can be used in place of lemon grass.