Rice cakes are mostly made of glutinous rice flour, and glutinous rice is a specialty of Jiangnan, and it is mostly made of sticky millet in the north. This kind of millet hulled powder, after steamed with water, is yellow, sticky and sweet, and it is a delicious food for people in the Yellow River valley to celebrate the harvest. The production method is that glutinous rice flour is sieved with silk, and then added with water and honey to form a hard dough, and dates and chestnuts are attached to the dough, and then wrapped with bamboo leaves and steamed. This kind of glutinous rice cake has the characteristics of the Central Plains.