Contents

Dry commercially packaged muffin mix. A mix, not a muffin — the baked article lasts days.

How long it keeps

Unopened, this keeps 9 months — which is what puts it on the long shelf.

As sold Unopened, in the cupboard Once opened
mix, dry, commercially packaged 9 months

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.