Donkey rolling is a well-known snack in Beijing, mainly made of yellow rice noodles, soybean noodles and red beans or brown sugar. The yellow rice noodles are rolled with stuffing, and then rolled with soybean noodles. The three-color finished product is very beautiful, with a sweet, fragrant and soft taste. It has both the aroma of soybeans and the sweetness of the fillings. It is very popular. The soybean noodles sprinkled during the production process are like the bursts of loess raised when wild donkeys roll in the suburbs of Beijing, hence the name "donkey rolling".