Expiration & Storage Tips
When does vinegar expire?
In general, vinegar has an almost indefinite shelf life due to its acidic nature, which makes it self-preserving and resistant to bacterial growth. Despite this, manufacturers often suggest a shelf life of about two years, whether opened or unopened, for optimal quality. However, it can technically be safely consumed even after two years if stored correctly. Freezing is not commonly used to preserve vinegar as it does not freeze well due to its low freezing point.
How do you tell if vinegar is bad?
Although vinegar is highly stable and does not expire in the traditional sense, it can undergo aesthetic changes over time that may affect its color, flavor, and clarity. This could include a cloudy or murky appearance, a change in color, or a developed sediment at the bottom. Typically, these changes do not indicate spoilage, but rather a loss in aesthetic quality. If your vinegar has a foul or off smell (more so than the regular pungent aroma), this could be a sign that it's past its prime and should probably be discarded.
Tips for storing vinegar to extend shelf life
• Store your vinegar in a cool, dark place - like a pantry or cupboard - to help maintain its quality.
• Keep your vinegar in its original glass bottle if possible, as glass is non-reactive and won't alter the flavor of the vinegar.
• Ensure the cap or lid is always tightly sealed after each use to prevent oxidation which could affect the flavor.
• If your vinegar develops a 'mother' (a harmless, gelatinous substance that can form due to natural fermentation), you can strain it out if you prefer, although it's not necessary.
• Distilled white vinegar can be used as a natural cleaning agent, so if you have a bottle that’s a bit old but still looks and smells fine, it can be repurposed for cleaning rather than discarded.