Sterile bubble herbal tea and preparation method thereof

The preparation method comprises the following steps: sorting and cleaning Chinese herbal medicines, decocting and extracting, cooling, filtering, dissolving and filtering auxiliary materials, standardizing, deoxidizing and sterilizing to obtain sterile feed liquid, cooling the feed liquid to below 15 DEG C, mixing the cooled feed liquid with sterile carbon dioxide according to a mass ratio of (150-300): 1, and filling the mixed feed liquid into a sterile liquid storage tank, so as to obtain the sterile sparkling herbal tea beverage. And maintaining the pressure at 6-10 bar, entering a carbonization tank with the back pressure of 4.5 bar for further stabilization, and filling the mixed material liquid under the sterile condition to obtain the sterile bubble herbal tea. Compared with existing products, the herbal tea has the effects of clearing heat and decreasing internal heat of herbal tea and the irritating taste of sparkling beverages, and commercial sterility is achieved under the condition that no preser