... material is Purple sweet potato 3.Could make delicious food Purple Sweet Potato Starch for Cakes,Bread Purple potato ... , can strengthen product body joss-stick, tail sweet, for the purple potato products provide a good ... flavor.[Product Origin]convolvulaceous plant-purple sweet potato's piece[Status]Soluble in water, ethanol ... and use within six months Purple Sweet Potato Starch for Cakes,Bread