Preparation method of instant functional solid beverage containing black fungus

The invention relates to foods and beverage, in particular to a preparation method of instant functional solid beverage containing black fungus. The preparation method comprises the following steps: mixing raw materials, wherein weight ration of black fungus to yacon to sweet potato to hawthorn in the raw materials is 1:4:3:2; deep processing: adding auxiliary materials; mixing the raw materials and the auxiliary materials; and carrying high-pressure homogenization, vacuum concentration, vacuum microwave freeze drying and superfine grinding in sequence and finally pelleting. The addition of the auxiliary materials accounts for 20-30% of the total weight of the mixed materials. According to the technical scheme, the preparation method has the following advantages: sugar-free four-in-one functional solid beverage is researched and developed by processing fruit and vegetable raw materials such as black fungus, yacon, sweet potato and hawthorn according to a production process of granular instant solid beverage; the prepared instant functional solid beverage is applicable to men and women, young and old people, as well as patients with diabetes, the respective functional effects of the raw materials can be given a full plate; moreover, the shelf period of the instant solid beverage is prolonged greatly, the raw materials are combined for the first time, and the instant solid beverage has healthcare function and edible value.