When you grind it at home, you’re leaving in all the nutrition. It will store for one to two weeks, or you can store the ground flour in the freezer. I borrowed a friend’s electric Blendtec mill to try out for myself this week.

When you grind a whole wheat berry (it looks like a piece of grain, not a berry), you are grinding the bran and germ into your flour. Because the germ has oil in it, the flour can turn rancid, so it’s removed in commercial flour. But most of your fiber, vitamins, minerals, and antioxidants are in the bran and germ.