Expiration & Storage Tips
When does pistachios expire?
Unopened commercial packets of pistachios generally stay fresh for up to 3 years past the printed date on the package if stored correctly. After opening, keep in a cool, dry place and consume within 1-2 weeks for optimal quality and up to 3 months for food safety. Homemade batches don't typically have preservatives, so it's best to consume them within a week. If you decide to freeze your pistachios, they can retain their quality for up to a year.
How do you tell if pistachios is bad?
To tell if pistachios have gone bad, check for any discoloration or mold on the nuts or on the shells. The shells should have a characteristic beige color. Inspect for holes or signs of insect infestation. If they've turned oily or rancid, they may have a sour, bitter, or otherwise off smell and taste. It's always best to taste a small amount before consuming a larger portion.
Tips for storing pistachios to extend shelf life
• Always store pistachios in a cool, dry, and dark place to prevent them from going rancid. A pantry, cupboard, or drawer away from heat sources is ideal.
• After opening, reseal the package tightly or transfer the nuts to an airtight container to prevent exposure to air and humidity.
• If storing for long periods, freezing pistachios can help preserve their quality. Place them in a freezer-safe bag or container. No need to thaw, you can eat them straight from the freezer.
• Although it's usually better to buy whole-shell pistachios, shelled pistachios can stay good longer when stored properly due to reduced exposure to bacteria and dirt.