Abstract: A method for the preparation of nonalcoholic beverages, especially carbonated beverages, and an apparatus for the practice of the method. First a sugar solution of prescribed concentration is prepared by dissolving sugar in deaerated water with an oxygen content below 0.15 mg/l. The sugar solution is adjusted in an additional deaeration to an oxygen content of less than 0.1 mg/l. The deaerated sugar solution can be finally adjusted to a prescribed concentration with deaerated water and carbonated, and finally it is mixed with flavorings specific to the beverage.