Chaa-plu, Vietnamese Pepper. Eaten raw in salads or cooked with other greens or dishes, or wrap meats and cook in oven or on stove or grill. It is used medicinally in India and South China as well as Indonesia for feverish diseases, for digestive disorders, and toothache, to treat pain in the bones. When the root is chewed with betel nut, it is said to be helpful for the treatment of coughs and asthma. The leaves are used as food (food wraps) in Vietnam.