Typically, we simply reseal the bottle cap and put it back in the fridge. However, according to Mashed, you should avoid storing leftover wine this way.
Even resealing the bottle cap is not a good preservation method and can affect the taste.
The above recommendation is based on wine storage. This process is closely related to minimizing the amount of oxygen in the wine container.
Oxygen can spoil the wine and a partially consumed bottle of wine contains quite a bit of oxygen. Resealing the bottle cap makes matters worse as the foil wrap around the cap has been removed and oxygen-containing air can easily pass through to the inside of the bottle.
Fortunately, keeping the wine in the fridge can slow down the above-mentioned oxidation process and leftover wine can still be used after a few days.
How should leftover wine be properly stored?
Pouring leftover wine into a tightly sealed glass jar is much more effective than keeping it in the bottle with the cap. The glass jar filled with wine and tightly sealed will minimize the oxygen contact with the wine and naturally limit the oxidation process
Of course, don’t forget to put the jar into the fridge.
Finally, you should note that the storage time for different types of wine will vary. White wine can be stored for up to a week, while red wine only “survives” for about 4 days.
According to Giao Thong newspaper