Wine should breathe a little, but not overnight. Putting an end to the oxidation process, which turns a favorite Merlot into vinegar, is easy with the Vacu Vin Wine Saver. Made from high-quality rubber, which will not affect the taste of the wine, the Wine Saver uses a vacuum-style pump to release air to keep a wine fresh. And it's easy to use--just place a stopper in a bottle's neck, place the pump over the stopper, and pump air out until some resistance is felt. This process is suitable for preserving all but sparkling wines, and will save Chiantis, Syrahs, and others for up to two weeks. © Amazon.com
I bought one of these and love it, love it, LOVE IT! The hiss of inrushing air as the vacuum is released is satisfying enough to be worth the purchase on its own, but the Vacu Vin also works really well. This is an absolute must for any wine enthusiast.