What is the raw material of Ejiao?

The main raw material of Ejiao is donkey skin. Ejiao is a rubber block made from the skin of Equus donkey after depilation. According to the National Pharmacopoeia, Ejiao can only be boiled with donkey skin. Other animals' fur has different effects of cooking gelatin, among which cowhide is called yellow gelatin, and the effect is second, while donkey skin has the opposite effect of cooking gelatin. Once eaten by pregnant women, it is very likely to lead to miscarriage.

Ejiao is brownish black or blackish black, smooth and shiny. Slightly transparent to light. Hard, brittle, brittle, brown-black or black in cross section, smooth and shiny. The smell is weak and the taste is slightly sweet.