To extend the life of unopened wine, storing it in the right conditions is essential. A dark, cool space, such as a wine cellar or wine fridge, is ideal. This is because the optimum temperature for storing wine is between 10°C and 20°C  (50°F and 68°F). In addition, keeping wine in a dark space avoids potential spoilage from lightstrike. Storing your wine in the correct conditions helps preserve the quality and freshness of unopened wine.

Most types of wine will remain fresh for a 2–3 days after opening, but there are a few things you can do to extend this.

  • Reseal the bottle: this slows the oxidation process, helping the wine stay fresh for longer. You can achieve this by reusing the original cork stopper, or using a bottle stopper.

  • Keep it in a cool place: storing opened wine in your fridge will prolong its freshness.

The aging potential of a wine depends on the wine itself, as well as other factors such as the winemaking practices, the wine’s vintage, and region. Wine with greater aging potential tends to have high quality of the grapes, mid to high level of tannins, high acidity, and high fruit concentration, among other traits.

Wines are often crafted to be enjoyed in a short period of time, and only a few fine wines have a long aging potential. However, fortified wines such as Madeira, Porto or Jerez have a much longer aging potential.

If you want to store your wine for a long time, it's advisable to read reviews, and follow recommended aging guidelines provided by the winery.