Mussels
The answer
Live mussels keep as long as they stay alive (usually 1–2 days refrigerated). Shucked mussels last 1–2 days.
Caution Discard mussels that stay open when tapped or smell strongly of sulfur.
How long it keeps
Fridge (40°F) Live: while alive (1–2 days); shucked: 1–2 days safe window
Freezer (0°F) Shucked 3–4 months best quality
Room temp Keep live shellfish cold then discard
Discard Discard dead shellfish before cooking.
By state & packaging
State Fridge Freezer
Live While alive (typically 1–2 days) Do not freeze live
Shucked 1–2 days 3–4 months
Signs it has gone bad
✕ Shell stays open when tapped
✕ Strong sulfur smell
✕ Broken shells
FAQ
Are mussels still good if one is open?
Tap it — if it does not close, discard that mussel.