How long do button mushrooms last?
They keep in the fridge for about 3 days.
Applies to: Fresh button mushrooms.

Shelf life of button mushrooms at a glance
| Storage | Keeps |
|---|---|
| Fridge | 3 days |
| Freezer | 10 months |
Keep fresh mushrooms unwashed in a paper bag or cloth in the salad drawer, not in plastic. Cooked mushrooms keep only about a day.
How to tell if button mushrooms have gone off
These are guide values for food that has been stored properly. Check how it looks, smells and feels: mould, a sour or unusual smell or a slimy surface mean it should go in the bin. Eat raw meat and fish strictly within these times, and never after the use-by date.