Donkey skins can be harvested all year round. Generally, the production season of Ejiao is from 10 to May of the following year. First, put the donkey skin in a container, soak it in water to soften, remove the donkey hair, chop it into small pieces, soak it in water to make it white, put it in boiling water, take it out when the skin is curled, and then put it in a glue boiling pot for boiling. After boiling, pour it into a container, take it out after the glue solidifies, cut it into small pieces and dry it.

Processing method

1, Colla Corii Asini: Take the original medicinal materials, pound them into pieces or bake them to be soft and cut into small pieces (diced).

2. Colla Corii Asini Beads: Take a proper amount of clam powder or Pollen Typhae in a pot, stir-fry with slow fire, add diced colla Corii Asini, stir-fry until the surface is round and yellow-white, and when there is no center in it, take it out quickly, sieve out the clam powder or Pollen Typhae, and let it cool.