Practice: take 300 grams of flour, boil it in hot water, mix it with warm water, and stew it for 2 ~ 3 hours. Heat the oil in the pan a little, add 400g of flour, fry it into a golden paste, and take it out for later use. White sugar with a little flour for stuffing. Roll the baked dough flat, spread it flat and crisp, roll it up, powder it, make it into a nest, wrap it up and roll it into a cake. Put a little oil in the pot, put the cake in, turn it three or four times, and bake it until it is golden on both sides.