If you've accidentally left opened bottles of dry wine out at room temperature overnight and haven't refrigerated them, the quality and taste of the wine might be affected. However, there are still steps you can take to preserve the wine as best as possible under the circumstances:
Recork the bottle: Ensure the wine bottles are tightly recorked to minimize the exposure to air, which can cause oxidation and spoilage.
Store in a cool, dark place: Place the recorked wine bottles in a cool and dark location away from direct sunlight and heat sources. A pantry or cupboard can work well for short-term storage.
Use a wine preserver: Wine preserver systems use inert gas (such as argon or nitrogen) to displace the air in the bottle, preventing oxidation. If you have a wine preserver, use it to extend the shelf life of the wine.
Consider a vacuum pump: Wine vacuum pumps can remove some of the air from the bottle, creating a partial vacuum to slow down the oxidation process. While not as effective as inert gas, it can still offer some preservation benefits.
Drink it soon: If possible, consume the wine within a day or two after being left at room temperature. It's best not to keep wine that has been exposed to air for too long, as its quality can degrade quickly.
It's important to note that while these methods can help preserve the wine to some extent, they won't fully restore the wine's original quality and taste. Oxidation can alter the flavor and aroma of the wine, making it less enjoyable compared to when it was freshly opened and properly stored.
To avoid this situation in the future, always remember to reseal and refrigerate opened wine promptly. Keeping wine at a stable temperature in the refrigerator slows down the oxidation process, allowing you to enjoy the wine for a longer period. If you have a wine that you want to save for a longer time, consider investing in a wine preservation system that uses inert gas or consider transferring the wine to smaller bottles to reduce air exposure.