A flavored shake drink is prepared from a prepackaged neutral flavored mix stored within a container. A flavored syrup is selected and dispensed through a bar gun styled dispenser in fluid communication with bag-in-box stored packages containing a variety of flavored syrups. A protective sleeve is placed...http://www.google.de/patents/US5948461?utm_source=gb-gplus-sharePatent US5948461 - Method and apparatus for preparing a flavored shake
