The invention relates to a process for preparing a reduced calorie beverage or food product employing fermentation of a plant-derived juice or liquid and removing the ethanol therefrom. The process involves first converting at least some of the sugar in a plant-derived juice or liquid by fermenting it with yeast to produce a fermentation product containing ethanol and subsequently removing at least some of the ethanol from the fermentation product, while maintaining the fermentation product at a temperature of less than fifty-five degrees Celsius to produce the reduced calorie beverage or food product. The alcohol removal step is performed at temperatures of less than seventy-five degrees in order to reduce the impact upon flavor and nutritional properties, relative to conventional alcohol removal at or near boiling temperatures. This invention also relates to an apparatus for performing the process for preparing a reduced calorie beverage or food product and to the reduced calorie juices and juice products created using this process and apparatus.