I made a witbier last weekend from a recipe which called for a pound of unmalted wheat in the grain bill (along with 8 oz pilsner malt, 8 oz flaked wheat, 4 oz flaked oats, and 6 lbs dry malt extract). The unmalted wheat was too hard for the mill at the local homebrew shop. I tried crushing it with a rolling pin with no success. So i wound up using it whole, which left me wondering if that was really effective.
Are there specific techniques for crushing unmalted wheat (assuming you don't have a mill)? Could i grind it in a coffee mill, or a blender?