There are crystal sugar in supermarkets or farmers' markets. In the supermarket, it is usually placed in the condiment area, that is, in the same area as salt and monosodium glutamate. . . The price of rock sugar is hard to say. Generally speaking, the price of industrial bulk purchase is currently 6.6-7.2 yuan/kg, and if it is retail, it will generally be 4-6 yuan/kg. . . If it is a small package, the price will be higher. . At the same time, the quality and efficacy of polycrystalline rock candy (large rock candy) are far superior to single crystal rock candy (small particles).