1, sealed and stored away from light. If you want to avoid the melting of crystal sugar, you can put it in a sealed glass or plastic bottle after opening it, or seal the mouth of the plastic bag immediately after use to avoid moisture and direct sunlight. Although crystal sugar is a recombined crystal, its stability is better than that of sugar, but it will melt if it is wet for a long time.

2, cold storage, in the case of high temperature in summer, you can put the crystal sugar in the refrigerator for cold storage. It is recommended that you use a dry, sealable glass jar to pack the crystal sugar and then put it in the refrigerator for cold storage. If the crystal sugar is found to be damp, it can be dried with an electric fan or exposed to the sun until it is dry. However, there is water on the surface of rock sugar. Because it is inconvenient to handle at home and easy to breed bacteria, try not to eat it.

3, the principle of high temperature environment, put the rock sugar in a porcelain jar or glass bottle, sealed and preserved to prevent air from entering. After that, put the packed rock candy in a cool and ventilated place, and do not expose yourself to the sun or get close to hot things, nor store food with easy evaporation of water or food with bad smell. It is best to store it indoors at a relative humidity of no more than 70%, and the surrounding sugar storage environment should not be lower than 0℃, because below 0℃, rock sugar will agglomerate due to freezing. The storage environment of sugar in summer should not be higher than 35℃. If the temperature is too high, the crystal sugar will melt.