Acacia gum is made from the skin of a donkey, cut into small pieces, washed with water, and put into boiling water to simmer over and over again, until the keratin of the donkey's skin has melted out, and then heated and concentrated, and solidified.

Donkey skin can be harvested throughout the year, generally in October to May for the gum production season. First, the donkey skin into the container, soaked in water to soften, remove the donkey hair, chopped into small pieces, and then soaked in water to make it white, into the boiling water, the skin curled up when the fish, and then into the simmering pot to simmer. Boil well after pouring into the container, to be removed after the gelatin solidification, cut into small pieces, drying.

Acacia gum solid cake:

Solid cake, also known as acacia walnut cake, the traditional cake medicinal food. In China at the latest in the Tang Dynasty has been circulated. Walnuts and Colla Corii Asini made into a paste for consumption, folk is not rare. Thousands of gold from large families, often as an unusual food in recent times. The formation of this trend has a lot to do with Empress Dowager Cixi. The Qing Palace Narrative records that "Empress Dowager Cixi loved to eat walnut Agaricus paste to help her skin smooth in old age."

Acacia gum cake is based on the Tang Dynasty palace secret formula "beauty cream" formula, development and invention, the formation of modern solid form, easy to carry and eat "Acacia gum cake". Opened a new food style of Colla Corii Asini. It is highly favored by people in Shanghai and Jiangsu and Zhejiang.