Ube Powder is a purple starch made in the Philippines from a yam called in English "purple yam." The yam has rough, gnarly skin.
The starch is slightly sweet, and colours the foods it is used in, such as desserts and jams (in the Philippines, the jam made with it is called "ube halaya.")
In the Philippines, the Ube yam is also cooked and served as a vegetable.
Also spelt "Ubi Powder".