Does Peanut Butter Expire?
Peanut butter has a long shelf life but does eventually expire. Unopened commercial peanut butter lasts 6-24 months past its printed date. Opened jars last 2-3 months in the pantry or 6-9 months refrigerated. Natural peanut butter spoils faster than processed varieties.
Key Takeaways
- Commercial peanut butter contains stabilizers and preservatives that extend shelf life significantly.
- Peanut butter powder has a longer shelf life than regular peanut butter due to lower oil content.
- Almond butter, cashew butter, and other nut butters follow similar storage guidelines.
Explanation
Commercial peanut butter contains stabilizers and preservatives that extend shelf life significantly. The high fat content in peanuts can eventually go rancid, but added hydrogenated oils in processed peanut butter resist this longer than natural versions.
Natural peanut butter (just peanuts and salt) lacks stabilizers and has a shorter life. The oil separation is normal - just stir it back in. Natural peanut butter should be refrigerated after opening and used within a few months.
Signs of spoiled peanut butter include a rancid or bitter smell, a darker color than normal, a dry or hard texture, or any visible mold. When in doubt, trust your senses - rancid peanut butter is safe to eat but tastes unpleasant.
Things to Know
- Peanut butter powder has a longer shelf life than regular peanut butter due to lower oil content.
- Almond butter, cashew butter, and other nut butters follow similar storage guidelines.
- Homemade peanut butter has no preservatives and should be refrigerated and used within 1-2 months.