Whole Wheat Biscuits

Preheat oven to 400 degrees F. Take butter out of the freezer, and grate or cut into pea-sized chunks. Keep butter cold. Mix dry ingredients in a large bowl until thoroughly combined. Using your hands, incorporate frozen butter into the flour mixture until it is just coated by the dry ingredients. Add milk, and continue mixing by hand just until the dough holds together. Place dough on a flat, lightly-floured surface and pat or roll into a rectangle 1 to 2 inches thick. Use a biscuit cutter or floured glass to cut out biscuits, and place on a greased baking tray. Gently brush the tops of the biscuits with the egg wash. Bake at 400 degrees for 3 minutes; lower the oven temperature to 375 degrees and continue to bake for another 5 minutes, until lightly browned. Remove and let biscuits cool slightly before serving.