Presto Wine On Tap, we believe that wine should taste exactly as the winemaker intended, from the barrel to the keg and right out of the tap. A fresh quality pour every time. Why Your Restaurant or Bar Should Serve Wines On Tap" Wine On Tap offers the evolution of wine by the glass dispensed from our one-way disposable KeyKeg system, Eliminating Oxidation, and leading to a Fresh pour from the 1st glass to the last glass. Wine On Tap Eliminates the need for wasteful bottles, plastic, cardboard, corks and packaging all together. Leading to cheaper garbage pick-ups and reduced storage. Service is more streamlined, as there are no cases to receive, no bottles to stock, and no corks to open.