The amount of rock sugar needed for boiling donkey-hide gelatin candy is 3-5 times that of paste. Add sugar according to the hardness you need. The higher the sugar content, the greater the hardness after caking. Other materials can be prepared according to your original formula. Specific operation: Proportion: donkey-hide gelatin 500g, yellow wine 700ml, black sesame and walnut 250g crushed into granules, and rock sugar1500-2500 g. Walnut, water (dissolving crystal sugar is enough), boil, stir while cooking, avoid burning the bottom of the pot, about 20 minutes, take out some water, then continue to simmer until it becomes sticky, and then cease fire. Cut the donkey-hide gelatin into pieces when it is 40% hot, then spread it around, cool it and collect sugar. That's it. I wish you good health.