How to Store an Open Bottle of Wine
Fail-safe ways to keep an unfinished bottle of wine in cooking―and drinking―condition.
To give your wine leftovers the longest life, recork and refrigerate them―even reds (they come up to drinking temperature soon after being poured). Most whites hold well for two days; reds for three. After that you can freeze leftover wine in ice-cube trays and use the cubes for cooking.