Nappa, also called Chinese cabbage, originated in the Beijing region of China. It has an oblong shape and tightly packed pale green/white leaves. With a mild, sweet flavor similar to cabbage with a hint of celery, nappa can be eaten raw, used in soups, for slaws and is the main ingredient in kim chee. Nutritionally richer than regular cabbage, nappa is sought after by health-conscious chefs. Keep it away from ethylene-producing fruits like apples and bananas to avoid speeding up the ripening process. Store nappa in the refrigerator in plastic perforated bags and use within 3-4 days.