This important culinary and medicinal herb grows in tropical regions and is used extensively in Asia, India, and Thailand. It is also grown in the Caribbean, where it is used primarily for reducing fever. In Malaysia, it is used extensively as a flavouring agent, as well as in perfumery and aromatherapy. This useful plant has a strong lemon flavour and loves hot and humid conditions. It is grown commercially for its widely used essential oil. Coarse grass sets 6-12 harvestable stalks, looking something like pencil leeks, slightly bulbous at the base. Harvest the tough stalks low; the plants will re-grow. Chopped or ground, fresh, dried or frozen, added to Thai soups, sauces and stir-fries, or made into a delicious medicinal tea which aids digestion.