Casta powder and Casta sauce are the same thing, only the state is different. Custard powder and custardcream, also known as custard powder and cheese sauce, are essential ingredients for cooked desserts and sweet pies. The application is very rich, besides being squeezed on the surface of bread for decoration, it can also be sandwiched in bread and filled in puffs for stuffing. Casta powder and Casta sauce, one is powder and the other is semi-fluid.