Kbac drink prepared by asynchronous fermentation technology and preparation method thereof

The invention relates to Kbac drink prepared by asynchronous fermentation technology and a preparation method thereof. The Kbac drink is prepared from the following raw materials: malt extract, lupulus, yeast, xylitol, white granulated sugar, citric acid, sodium citrate and pure water. The preparation method comprises the following steps of: adding alpha-amylase into the malt extract for saccharification; performing lactobacillus fermentation, and adding the lupulus; performing lactobacillus fermentation, adding white granulated sugar, xylitol, citric acid and sodium citrate, and mixing with pure water; and filtering and sterilizing to obtain the Kbac drink. Through the invention, the prepared Kbac drink has the advantages of pure mouthfeel, moderate sour and sweet taste, puckery taste and rich nutrition, prevents foreign smell and facilitates control on quality and mouthfeel.