A machine for mixing and dispensing beverages includes a single manifold, a bottle restraining unit and a randomizing beverage activator. The manifold is connectable to a plurality of separate, pre-filled beverage holders of already prepared beverages and provides pre-defined portions of selected beverages to a dispensing outlet. The bottle restraining unit restrains the pre-filled bottles, which are either plastic bottles or glass bottles. The activator dispenses at least two beverages from the set of the beverage holders by randomizing an attribute of a drink. The attribute is chosen from an amount of the beverages and the beverage holders.