Chill butter in freezer for 15 minutes.
Mix together, corn meal, flour, salt, baking powder, sage, black pepper.
Add in cold butter, using pastry cutter or hands.
Add egg to buttermilk.
Add this to the dry ingredients.
Stir with a wooden spoon to bring together.
Pat into a round disc.
Cut or drop biscuits. It doesn't matter how pretty they are; you're going to crumble them later.
Bake for 15 minutes at 450 degrees.