Ejiao cake can be completely dissolved, and with the aroma of yellow wine, the completely dissolved water is brown-black. The dissolution process of fake donkey-hide gelatin cake will have a faint leather taste, which will not be completely dissolved, and some will be packed in pieces.

A catty of donkey-hide gelatin is about 2,000 yuan, and a catty of donkey-hide gelatin can cook four jins of donkey-hide gelatin cake, and the value determines the price.