Preparation materials: yam, glutinous rice flour, sugar, black sesame and oil. Press the steamed yam into mud, add glutinous rice flour and sugar, stir well and knead into dough. Divide the dough into small pieces, knead it round and flatten it, and dip it in black sesame seeds. Pour the right amount of oil into the pot and fry it on low heat until it is golden on both sides.