This is something I have been exploring recently. I learned that whole grain flour loses many of its key nutrients in the first 36 hours after it is milled. This means that grinding it on an as needed basis is key to maintaining its nutrient value. You can buy a flour mill or a mill attachment (for stand mixers) but they are fairly expensive. So I decided to try using my Magic Bullet to grind flour. I used the grinding/ whipping blade (the flat one) and organic whole wheat berries. It worked like a charm! I have used it to grind rice, oat, and spelt flour as well. In the long run, I might invest in a good flour mill (that would probably result in a finer flour than the Magic Bullet) but for now this method works great!