- How long does mezcal last? The answer to that question is a matter of quality, not safety, assuming proper storage conditions - when properly stored, a bottle of mezcal has an indefinite shelf life, even after it has been opened.
To maximize the shelf life of mezcal for quality purposes, store in a cool dry area away from direct heat or sunlight; keep tightly closed when not in use.
Once a bottle of mezcal is opened, the contents may begin to evaporate slowly and some flavor may be lost over time, but the mezcal will remain safe to consume if it has been stored properly.
How to tell if mezcal has gone bad? The shelf life of mezcal is indefinite, but if mezcal develops an off odor, flavor or appearance, it should be discarded for quality purposes.
Sources: For details about data sources used for food storage information, please click here