Combine dry ingredients in a large bowl.
Cut in butter and shortening using a pastry cutter.
Make a well in the center of the dry ingredient and pour in 1 cup of buttermilk, if the dough looks dry or doesn't come together, add 1 tablespoon at a time until the dough is combined.
Turn the dough onto a floured surface, dust the top with flour and gently fold dough over itself 3 or 4 times.
Press dough into 1-inch thick disk.
Cut out biscuits with a 2-inch cutter, make sure to press straight down.
At this point, place biscuits in the freezer while the oven preheats to 425F.
Once the oven reaches temperature place the biscuits in a baking pan so they barely touch.
Optional: brush with milk or melted butter before baking for additional browning.
Bake for 20 to 25 minutes or until tall and golden brown.