This innovative health beverage is concentrated by the Fed-batch fermentation process which shortens the fermentation time to 15 days and then thickened by a thin film evaporator without heat. It passes through the process of extracting aroma and essential substances from the tea rapidly to achieve a concentration by 5-7 times by controlling the amount of glucuronic acid and DSL, while making it free of alcohol. A litre of concentrated Kombucha can produce 25 litres of ready-to-drink Kombucha with the quality of the important substance, colour, aroma, taste and quantity does not change from the process it goes through.