The traditional culinary method of this dish begins with the preparation of the main ingredients: 500 grams of flour, 1 kg of peanut oil, 50 grams of egg, 50 grams of sugar, 150 grams of , 60 grams of sesame seeds and . With the exception of the sesame seeds, everything else is mixed together, and the resulting dough is cut into pieces each weighing around 40 grams. The sesame seeds are boiled in water for a while and then taken out and put into a container, and each small piece of dough is rolled in the sesame seeds to have the sesame seeds covered on themselves. The frying is the most difficult part because if the oil is too hot, there will not be any open cracks, but if the oil is not hot enough, the dough will fall apart. The chef must lift the frying pan off the stove and put it back on depending on the situation. The resulting opening crack is where the literal name in Chinese comes from, because the it resembles a happy smiling mouth.