Ube (or ubi) is the Filipino word for purple yam (Dioscorea alata). It contains pigments that gives its violet color. In India, this vegetable is known as ratalu or violet yam or the Moraga Surprise. In Japan, it is called murasaki imo. In Tonga: ʻufi (and is considered there as a royal food), in Hawaiʻi: uhi, in Tahiti: ufi. In the Philippines, ube is cooked with sugar and eaten as a sweetened dessert or jam called ube halaya which is a bright violet color. Ube is also an ingredient in the fruity dessert halo halo, another popular Filipino dessert. In botany, this species is also known by the names "water yam" and "winged yam."