Sour cream keeps about Until the package use-by date in the fridge at 40°F (4°C) or below, counting from the day you bought it.
| Situation | Keeps for |
|---|---|
| Unopened · fridge | Until the package use-by date |
| Freezer | Not recommended |
About Until the package use-by date at 40°F (4°C) or below, according to USDA FoodKeeper v128. That window runs from the day you bought it — FoodKeeper publishes no separate after-opening figure for this one.
Yes — keep Sour cream at 40°F (4°C) or below. Refrigerate at 40°F (4°C) or below.
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.
USDA FoodKeeper v128 does not recommend freezing Sour cream — it survives but the texture or quality suffers badly.