Sweet potato. Sweet and soft sweet potato, can be used as a filling to make soufflé, can also be eaten directly alone, inside with or without filling can be, outside the matcha tea powder, cocoa powder, coconut, bean flour round, feel free to mix and match, creamy, super tasty, like a donkey roll. Chengde donkey roll is a very unique Hebei specialty snacks, Chengde donkey roll to yellow rice as the main material, cooking practices.