1, tapioca flour after adding water becomes beach for the reason that: the water temperature is not enough, to do taro rounds need to be 30-40 degrees temperature; or too much water, to do taro rounds need to slowly add water.

2, according to the tapioca water absorption degree add water. Practice steps are: the purple potatoes, yam steamed. Steamed yams, purple potatoes crushed into puree, and tapioca mixed together.