: While bulk bins are great for whole seeds, avoid buying pre-ground flax from open bins, as exposure to air can make the oils rancid.
: This is the most bioavailable form, as your body can easily digest it. The downside is that once ground, the oils are exposed to oxygen and can spoil quickly.
To ensure you're getting the highest quality flaxseed, follow these shopping guidelines : how to buy flaxseed
: These have a hard outer shell that protects the delicate oils inside from going rancid. However, whole seeds often pass through the body undigested, meaning you won’t absorb all their nutrients.
: Flaxseed should have a mild, nutty aroma. If it smells bitter or like oil paint, it has likely gone rancid. : While bulk bins are great for whole
For the best balance of nutrition and freshness, many experts at the Mayo Clinic and JustAnswer recommend buying and grinding them at home using a clean coffee or spice grinder just before use. Why It's Important to Eat Undamaged Flax Seeds - Gene Food
: If buying pre-ground flaxseed, look for vacuum-sealed or opaque bags that protect the seeds from light and air. To ensure you're getting the highest quality flaxseed,
: Once you get home, store whole seeds in a cool, dark place. Ground flaxseed and flaxseed oil MUST be refrigerated or frozen to maintain freshness. 4. Pro Tip: Buy Whole, Grind Later