Hard candy is a kind of candy boiled at high temperature. The dry solid content is very high, about 97%. Sugar is hard and crisp, so it is called hard sugar. Hard sugar belongs to amorphous amorphous structure. Hard sugar belongs to amorphous amorphous structure. The specific gravity is 1.4-1.5 and the content of reducing sugar is 10-18%. The sugar body is transparent, translucent and opaque, and some are drawn into a silky shape.

The types of hard sugar include fruit flavor, cream flavor, cool flavor, white control, mixed sand and roasted flower hard sugar. The requirements for fruit flavor type hard sugar are the same as the color, fragrance, taste and shape of the fruit.