The donkey whip is a long cylindrical strip, or slightly curved, about 30 centimeters long, 3 to 4 centimeters thick, with a rounded front end, larger, black in color; a large testicle on each side of the base; fleshy, hard. To the whole, with testicles, no residual meat grease, body dry is preferred.

Donkey whip is the male external genitalia of the equine animal donkey, also known as the donkey kidney, the form of donkey meat strips. It is a flavor of Chinese medicine to strengthen the muscles and bones, donkey whip is produced in Hebei, Shanxi, Heilongjiang, Sichuan and other places. Concoctions: wash and boil, cut into thin slices, sun-dried, into the hot pan with clean sand fried scalding until yellow, remove and wash the sand that is.