The taste and shelf life of a fruit based beverage is significantly improved if it is produced without the presence of viable yeast. BioDETECT has developed an easy-to-use time saving application that is able to detect one single growing yeast cell in a defined volume of beverage after only 24 hours. The application, based on the MICROCYTE® cytometer technology and a specific line of reagents, will be most useful to manufacturers of beverages using ingredients from fruit.