Does Whiskey go bad after opening?

Yes, whiskey can go bad after opening, but it's a slow process. Here's why:

* Evaporation: The biggest culprit is evaporation. Whiskey is a high-proof spirit, and its alcohol content allows it to evaporate faster than water. This can weaken the flavor and potency over time.

* Oxidation: When exposed to air, whiskey can oxidize, which can cause changes in its flavor and color.

* Absorption: Whisky can absorb flavors from the surrounding environment, particularly from the container it's stored in.

How to tell if your whiskey has gone bad:

* Smell: Look for a change in the aroma. It might smell vinegary or metallic.

* Taste: The flavor might be muted, bland, or have a bitter taste.

* Appearance: The color could have changed or become cloudy.

How to prolong the life of your opened whiskey:

* Store it properly: Keep it in a cool, dark place, away from direct sunlight and heat.

* Use an airtight container: Transfer it to a smaller, airtight container or bottle, like a decanter or a smaller bottle.

* Don't leave it open for too long: Try to finish the bottle within a few months.

Overall, whiskey can last for quite a while after opening, but it's best to consume it sooner rather than later for the best flavor.