3 cups all-purpose flour1 tablespoon baking powder1 1/2 teaspoons salt1/2 teaspoon baking soda1/4 cup cold vegetable shortening2 tablespoons cold butter
1 1/3 cup buttermilk1 recipe Egg Wash (see below)
Preheat the oven to 450 degrees. Lightly grease a large baking sheet and set aside.
In a large bowl whisk together flour, baking powder, salt, and baking soda until combined well. Cut in the butter and shortening until mixture resembles small peas. Stirring with a fork, gently add in buttermilk to make a soft dough. With floured hands knead dough gently 4 times in bowl.
Turn dough onto a lightly floured surface. Roll or pat biscuit dough to 1/2 inch thickness and cut with a floured 2-inch biscuit cutter.
Place cut-out dough about 2 inches apart on prepared baking sheet. Brush buttermilk biscuit tops with Egg
Wash. Bake biscuits in the center of the oven for 14-17 minutes, until golden brown.
Egg Wash: In a small bowl beat together one large egg with 1 tablespoon water.