Rock sugar: large sucrose crystals made by special crystallization method, translucent, with less impurities, converted sugar and water content, good quality and easy storage. Rock sugar is sweet and flat, and has the effect of nourishing the middle energizer and nourishing the stomach. It can be used for treating dry cough, sore throat, dry mouth, gastrointestinal weakness, anorexia, hypertension, etc. In fact, sugar, rock sugar and brown sugar are all extracted from sugarcane and beet, and all belong to the category of sucrose. Brown sugar is a mixture of sucrose and molasses, and white sugar is made of brown sugar through several processes such as washing, centrifugation, honey separation and color peeling. Rock sugar is formed by recrystallization of white sugar under certain conditions. Their chemical composition is sucrose. If brown sugar is stored for a long time, molasses will be oxidized, making the color darker and sour, so brown sugar can no longer be eaten. Generally speaking, white sugar is flat and has high purity; Brown sugar is warm and contains many impurities; Rock candy is the crystallization of sugar. Efficacy: Proper consumption of white sugar helps to improve the body's absorption of calcium; But too much will hinder the absorption of calcium. Rock candy can nourish yin and promote fluid production, moisten lung and relieve cough, and has a good auxiliary therapeutic effect on lung dry cough, dry cough without phlegm and expectoration with blood. Although there are many impurities in brown sugar, its nutrients are well preserved. It has the effects of invigorating qi, relieving middle warmer, helping spleen to promote digestion, enriching blood and removing blood stasis, and also has the effects of dispelling cold and relieving pain. Therefore, it is often effective for women to drink some brown sugar water because of cold and physical weakness or dysmenorrhea caused after delivery. Brown sugar has an excellent nourishing effect on the elderly, especially those who have recovered from a serious illness. In addition, brown sugar can also prevent vascular sclerosis to a certain extent, and it is not easy to induce dental diseases such as dental caries. In addition, when eating sugar, it should be noted that 1/ diabetic patients should not use it. 2/ Dosage: no more than 30 grams per day.