Abbreviation for rectified grape must concentrate. Rectifying means "clean" or separating a liquid mixture into its components by repeated distillation . This results in a Concentration all soluble substances so that the treated mixture. According to EU regulation or definition, this is now a non- Caramel Grape must which is obtained by partial removal of water using any method (except for exposure to fire, heat). The are usually prepared by vacuum evaporation of must at very low temperatures to prevent unwanted caramel flavor. The production by the chemical process Ion exchange subject to strict EU prescrib...You see a shortened form of description. The full description is reserved for our subscribers.