Sweet potato cakes are also delicious and beautiful: steam and peel the sweet potatoes, then mash them with clean wine bottles, add some flour and sugar, knead the sweet potato dough not too hard or too soft, then roll them into strips into cakes with a thickness of 5 or 6 mm, sprinkle with sesame seeds, and fry them in oil, which is crisp outside and soft inside, sweet and delicious.