Contents

Dried onion, milled. Hygroscopic — it pulls water out of the air and cakes, which is a sign of a bad lid rather than of age.

How long it keeps

Unopened, this keeps 4 years — which is what puts it on the long shelf.

As sold Unopened, in the cupboard Once opened
dried, commercially bottled or purchased in bulk 3–4 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.