Expiration & Storage Tips
When does ground flaxseed expire?
Unopened ground flaxseed can last for up to a year in a cool, dark, and dry pantry. Look at the best before date on the package for an accurate timeframe. Once opened, it's best to consume ground flaxseed within six weeks as it quickly becomes rancid due to the high oil content. However, if properly refrigerated by storing in an airtight container, it can extend the shelf life for up to four months. Ground flaxseed can also be frozen for up to 6 months.
How do you tell if ground flaxseed is bad?
You can tell if ground flaxseed has gone bad if it has lost its nutty smell or if it smells sour or fish-like. This indicates that the oils in the flaxseed have become rancid. The texture could also be a hint as it can become clumpy if exposed to moisture. Having a taste can be a definitive way to detect if ground flaxseed has gone bad - it will have a bitter or sharp taste rather than its usual mild, nutty flavor.
Tips for storing ground flaxseed to extend shelf life
• Store ground flaxseed in an airtight container to prevent exposure to air and moisture.
• Store it in a cool, dark place, like a pantry, to keep it away from heat and light that can speed up the rancidity.
• If you've opened the package, consider storing it in the refrigerator or freezer to extend its shelf life. Ground flaxseed maintains its nutritional benefits even when frozen.
• Only ground as much flaxseed as you need at a time, since whole flaxseeds keep longer than ground ones.
• To defrost, simply take out the amount you need and let it come to room temperature before use. Do not microwave as it can damage the beneficial oils.