How long do mashed potatoes last?
Mashed potato leftovers can be kept in the refrigerator for 3 to 4 days or frozen for 3 to 4 months.
| Form | Where | Official window |
|---|---|---|
| leftovers | refrigerator | 3 to 4 days |
| frozen leftovers | refrigerator | 3 to 4 months |
The official discard rule
If foods have been left out for more than two hours, discard items to prevent foodborne illness.
These are the official windows; when in doubt, follow the source linked below.
Grounded in: foodsafety.gov, fsis.usda.gov. Every window above appears
verbatim in the linked sources.
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