The Kitchn breaks down the basic difference between whole-grain and regular, processed flour.
Just put it in an airtight container or a freezer bag.
When youre ready to use it, just take it out and let it defrost a bit.
For more detail, head to the full post at the link below.
Photo byMary Catherine Tee.
Why You Should Probably Be Storing Your Whole-Grain Flours in the Freezer| TheKitchn