Special equipment: a pastry cutter
Preheat the oven to 450 degrees F.
Stir together the flour, powdered milk, baking powder, sugar, salt, pepper, cream of tartar and sage in a medium bowl.
Using a pastry cutter, cut the cold butter and shortening into the dry mixture until blended thoroughly.
Stir in the buttermilk so the dough comes together.
On a lightly floured surface, turn out the dough and use hands to press into a circle 1 to 1 1/2 inches thick.
Cut out the circles with a biscuit cutter or glass. Place the biscuits in cast-iron skillets, then brush the tops with the melted butter.
Bake until golden brown, 10 to 12 minutes.
This recipe is doubled to make 32 biscuits.
This recipe has been updated and may differ from what was originally published or broadcast.
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