The main goal in keeping wine "leftovers" is to prevent the wine from aging between the time you open the bottle and when you finish the remaining wine. Air destroys wine, so you need to minimize the air contacat. You also have to keep the wine in the fridge during this time, because 55F is a 'normal aging temperature' and since the air is already aging the wine, you want to minimize *any* other degrading that might go on. Any temperature over 55F will simply make things worse.The vacu-vin attempts to help by sucking the air out of a half-empty bottle of wine. Note that, instead of the few pumps their literature suggests, you need about 15 pumps to get most of the air out. For many wine types the fact that you are in essence lowering the pressure in the bottle pulls the 'liveliness' out of the wine, which ruins it.I have done a series of tests for my website comparing both a red and white after 3 days, being stored under a variety of circumstances. The vacu-vin "works" in the sense that it does remove most of the air. However, it was also found to greatly harm some wines - even when you compare its use against a simple cork.The *ideal* method of saving wine is cheap. Simply put the wine into a smaller glass bottle, cork it, and put it in the fridge. That has the best chance to keep the most common wines for another few days in the best condition. No air at all, no vacuum either. Of course, *no* method will really keep a wine in the same state it started in. You can always cook with the wine on the second day, and move along to your next bottle!Life is too short to drink bad or old wine :)
