You can put 1-5 days to snowball. Donkey rolls are pasta and need to be eaten within 1-2 days. It can only be stored at room temperature for 1-2 days in summer, about 3 days in winter and about 5 days in refrigerator. Rolling pin is one of the traditional snacks in old Beijing and Tianjin. The finished products are yellow, white and red, which are really beautiful. Because the soybeans spilled in the final production process are like the bursts of loess raised by wild donkeys in the suburbs of old Beijing, it is named "snowballing". Moreover, the raw materials of "snowballing" are rhubarb rice noodles, soybeans, sand, sugar, sesame oil, osmanthus, green shredded pork and melon seeds. The production of snowballing usury is divided into three processes: blank making, stuffing mixing and molding.