Contents

Cider fermented twice — to alcohol, then to acetic acid. Its own acidity is what preserves it, which is why FoodKeeper gives it no end date at all.

How long it keeps

Unopened, this keeps indefinitely — which is what puts it on the long shelf.

As sold Unopened, in the cupboard Once opened
as sold indefinitely

Counted from the date on the package. Figures are the USDA FSIS FoodKeeper table's, for unopened storage at room temperature; FoodKeeper counts a month as 30 days.

The table was not pulled from USDA — fsis.usda.gov answers 403 to non-browser clients from this machine — so it came from a mirror of the data.gov dataset and its vintage is unverified. Treat a single figure as indicative, not as a use-by date.