How Acid Levels Play A Role In Determining How Long Vinegar Lasts - Tasting Table
Briefly

Vinegar's shelf-life significantly depends on its acidity; the lower the acidity, the faster it can spoil, making adherence to best-by dates crucial.
Distilled vinegar offers the longest shelf-life due to its high acidity, while varieties like balsamic have a shelf-life of up to five years.
Read at Tasting Table
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