Does an open bottle of tequila go bad?

* Evaporation: Tequila is a high-proof alcohol, meaning it has a high alcohol content. This makes it more volatile and prone to evaporation over time. The longer the bottle is open, the more the alcohol evaporates, changing the flavor profile.

* Oxidation: When exposed to air, the tequila's compounds can oxidize, which can alter its flavor and aroma. This process is especially noticeable in lower-quality tequilas.

* Absorption of flavors: Open tequila can absorb flavors from its surroundings, like the refrigerator or other nearby foods. This can affect its taste and create an off-flavor.

How long does tequila last?

* High-quality tequila: A good quality tequila, especially añejo or extra añejo, can last several months or even years after opening if stored properly.

* Lower-quality tequila: Lower quality tequila will likely start to taste off after a few weeks.

How to store open tequila:

* Refrigerator: Storing tequila in the refrigerator can help slow down evaporation and oxidation. Make sure to keep it tightly sealed in its original bottle.

* Cool, dark place: If you don't want to refrigerate it, store the bottle in a cool, dark place. Avoid direct sunlight and heat.

Signs of bad tequila:

* Cloudy appearance: Tequila should be clear. If it's cloudy or has sediment, it's probably gone bad.

* Strong vinegar-like smell: Oxidation can cause tequila to develop a vinegar-like smell.

* Changes in flavor: If the tequila tastes off or has a bitter, metallic, or chemical taste, it's likely not good anymore.

Bottom line: While tequila can last for some time after opening, it's best to consume it within a reasonable timeframe. Pay attention to any changes in its appearance, smell, or taste, and discard it if you suspect it has gone bad.