Mushrooms
The answer
Fresh whole mushrooms last 4–7 days in the fridge; sliced, 1–2 days fewer.
Caution Store in a paper bag or original container — sealed plastic makes them slimy faster.
How long it keeps
Fridge (40°F) 4–7 days (whole) safe window
Freezer (0°F) Cook first; 10–12 months best quality
Room temp Store refrigerated then discard
Discard Discard slimy, dark, or fishy-smelling mushrooms.
The answer
Cooked mushrooms last 3–4 days in the fridge.
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 after 4 days in the fridge.
By state & packaging
State Fridge Freezer
Whole, raw 4–7 days Cook first
Sliced, raw 3–5 days Cook first
Cooked 3–4 days 10–12 months
Signs it has gone bad
✕ Slimy film
✕ Dark, wet spots
✕ Fishy or sour smell
FAQ
Are wrinkled mushrooms still good?
Wrinkling means drying out — a quality issue. They’re fine to cook if not slimy or smelly.