use flour, warm water and yeast. First, warm water is used to make flour into dough, and yeast powder is added during dough mixing. After dough is made, it is covered in a pot for fermentation. After dough is fermented, it is kneaded into strips, then the dough strips are cut into 7 cm pieces with a knife, and then it is kneaded into a cone shape and steamed in a pot for 28 minutes.