- Ideally, flax seed should be refrigerated.
- The quick rancidity is due to the high fat content of flax seeds.
- Vacuum-packed packaging is the best, because it prevents the seeds from having contact with oxygen before opening.
Keep the product somewhere cool and dark, you don’t absolutely need to keep the product in the fridge. If at all possible, choose somewhere that is consistently less than 15 C (60 F) for good long term storage up to 14 months.
It is recommended that you purchase whole flax seed and grind it yourself. It’s also less expensive this way. Any time you taste flax meal that is at all bitter, throw it away. It should be mildly nutty tasting, and not at all harsh.