The Best Countertop Grain Mills and Flour Grinders in 2020 ...
Composite stone burrs provide a cool grind, produce a clean product free of grit, and have a long life. Metal Burrs Burrs made from metal, or plates, can be flat or conical in shape, and are usually made of hardened cast steel – which produces a shearing action on the kernels, as opposed to the crushing motion of stone plates.