Once opened, Nacho cheese (store bought) keeps about 2 weeks in the fridge. Unopened, it keeps about 2 years.
| Situation | Keeps for |
|---|---|
| Unopened · pantry | 2 years |
| Opened · fridge | 2 weeks |
| Freezer | 3 months |
About 2 weeks refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.
Yes — keep Nacho cheese (store bought) at 40°F (4°C) or below once it's open. Cool, dry pantry unopened; refrigerate at 40°F (4°C) or below after opening.
Look for: Sour or off smell; Mould or fuzzy spots; Curdled, slimy, lumpy, or separated texture; Yellowing or other discoloration. Never taste something to test it — when in doubt, throw it out.
Yes — USDA FoodKeeper v128 gives about 3 months in the freezer at 0°F (−18°C). Frozen food stays safe indefinitely; that window is about quality, not safety.