Contents

Ground maize. Degerminated keeps a year because the germ — and its oil — has been taken out; whole-grain cornmeal does not.

How long it keeps

Unopened, this keeps 12 months — which is what puts it on the long shelf.

As sold Unopened, in the cupboard Once opened
regular, degerminated 6–12 months 2 years

Counted from the day you bought it. 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.