How does reverse osmosis contribute to alcohol production, specifically in winemaking?

Reverse osmosis (RO) contributes to alcohol production, specifically in winemaking, by allowing for the selective removal of water from grape must or wine, thereby concentrating the desired components. Reverse osmosis is a membrane filtration technique that uses pressure to force a solvent (water, in this case) through a semi-permeable membrane that retains larger molecules (sugars, acids, flavor compounds). In winemaking, RO is primarily used in two main applications. The first is must concentration. In some vintages, grap....