How long does a sealed bottle of whiskey last?

An unopened bottle of whiskey can last indefinitely. The alcohol content of whiskey acts as a preservative, preventing the growth of bacteria and other microorganisms that can spoil the whiskey. As long as the bottle is kept sealed, the whiskey will not oxidize or evaporate, so it will retain its flavor and quality over time.

Once the bottle is opened, the whiskey will start to oxidize. This process will cause the whiskey to change color and flavor over time. The exact amount of time it takes for whiskey to oxidize depends on several factors, including the type of whiskey, the amount of air exposure, and the storage temperature.

In general, a bottle of opened whiskey will last for several months to a few years before it starts to decline in quality. However, some whiskeys, such as single malt scotches, can last for much longer.