How Long Do Nuts Last?
In a cool airtight pantry, most nuts keep a few weeks to a few months; refrigerated, several months; frozen, up to a year or more. Their oils drive rancidity, so cold storage extends them most. Discard nuts that smell of paint or taste bitter.
Nuts do not usually mould, they go rancid, as their high oil content oxidises. That means shelf life is all about keeping them cold and sealed.
Shelf life by storage
| Storage | Approx keeping |
|---|---|
| Cool pantry (airtight) | Weeks to a few months |
| Refrigerated | Several months |
| Frozen | Up to a year or more |
In-shell nuts last longer than shelled, and whole longer than chopped. Roasted nuts go rancid faster than raw.
Signs they have turned
Rancid nuts smell of paint or old oil and taste bitter or sharp. Trust your nose. Store them cool and airtight, ideally vacuum sealed, and refrigerate or freeze for the long haul.
Frequently asked questions
Do nuts expire?
They go rancid rather than mouldy. Rancid nuts smell of old oil or paint and taste bitter, still not usually dangerous, but unpleasant. Cold storage delays it.
Which last longer, in-shell or shelled nuts?
In-shell nuts keep longer, the shell protects the oils from air. Shelled nuts oxidise faster and benefit most from the fridge or freezer.