White sugar and rock sugar are both extracted from sugar cane and sugar beet, belonging to the category of sucrose. White sugar is made of brown sugar through washing, centrifugation, honey separation and peeling. Rock sugar is formed by recrystallization of white sugar under certain conditions. Their chemical composition is sucrose.

2, the appearance is different.

White sugar is mostly sold in bulk, while rock sugar is sold in pieces.

3, the effect is different.

Proper consumption of white sugar is helpful to improve the absorption of calcium by human body; But too much will hinder the absorption of calcium. And rock candy can nourish yin and promote fluid production, moisten the lungs and relieve cough, which has a good auxiliary therapeutic effect on dry lung cough, dry cough without phlegm and expectoration with blood.

4. The purity is different.

The main component of white sugar is sucrose, the sugar content of white sugar is 99.9%, and the sugar content of soft sugar is 98.9%.

Rock candy is made by melting white sugar into liquid, firing, removing impurities, and then evaporating water to make it crystallize naturally at about 40℃, or freezing and crystallizing. So the purity of rock sugar is relatively high. The main component of rock candy is still sucrose, and the sugar content of rock candy is 99.3%.

Good quality rock candy is white or yellow, translucent, with crystal luster, pure and sweet texture, no odor and no obvious impurities.