Shelled walnuts will last about 1 year in the refrigerator when stored properly in an airtight container or sealed package. Some sources give a shorter freshness window of about 3 months to 6 months for best quality, so if they smell stale or rancid, it’s better to toss them.

Quick Scoop

  • Best estimate for fridge storage: about 12 months.
  • Quality may peak sooner: often 3 to 6 months for the freshest flavor.
  • Storage tip: keep them cold, sealed, and away from strong odors like onions or fish.

How to tell they’re off

Walnuts that are rancid may smell stale, paint-like, or just “not nutty” anymore. If they look shriveled or taste bitter, that’s usually a sign they’ve gone past their best quality.

Best storage move

If you won’t use them for a month or more, freezing is the safer long-term option.