Sift all dry ingredients (flour, baking powder, cream of tartar, salt, sugar) in a bowl.

Add shortening and blend until the mixture resembles the size of cornmeal.

Slowly pour milk into the flour mixture.

Add the egg.

Stir until a stiff dough forms.

Knead the dough on a floured surface 5 times.

Roll or pat the dough to 1/2-inch thickness.

Cut out biscuits using a biscuit cutter.

Place the biscuits in a greased 9-inch round cake pan.

Cover the tops of the biscuits with 1 tablespoon of bacon grease.

Bake in a 450°F (232°C) oven for 15 minutes.