Rolling Donkey is a kind of cake made of bean-flour and is a famous Islamic snack in Beijing. It is made from steamed glutinous millet or sticky rice, scattered with fried bean-flour and filled with red pea. After being cut into blocks, it is rolled in soya bean-flour, which is why this snack gets the name, Lu Da Gun. When you roll it in soya bean-flour, it looks like a donkey rolling on the ground, raising dusts.