Normally, restaurants shy away from offering premium wines by-the-glass as the cost of waste is too high.
When a bottle of wine is opened, the restaurant has three days on average to sell the rest of the bottle before oxidation occurs and the wine becomes unpalatable.
With The Coravin Wine Access System, the Sommelier never has to pull the cork from the bottle. The Coravin Wine Access System is a proprietary system of Coravin Inc. that allows the wine to be poured from a bottle without ever pulling a cork, thus saving the wine from being exposed to oxygen and preventing the oxidation process from occurring.