Mashed Potatoes
The answer
Mashed or cooked potatoes last 3–4 days in the fridge. Freeze for longer storage; quality is best within a few months.
Caution Refrigerate cooked potatoes within 2 hours. Do not leave baked potatoes wrapped in foil at room temperature.
How long it keeps
Fridge (40°F) 3–4 days safe window
Freezer (0°F) 10–12 months best quality
Room temp 2 hours max then discard
Discard Discard if held above 40°F for more than 2 hours, or above 90°F for more than 1 hour.
By state & packaging
State Fridge Freezer
Mashed or plain cooked 3–4 days 10–12 months
Baked potato left in foil at room temp Discard Discard
Signs it has gone bad
✕ Sour smell
✕ Slimy texture
✕ Mold
FAQ
Can baked potatoes sit out overnight in foil?
No. Foil traps heat and moisture in the danger zone. Discard them.