Buttermilk Gravy Pioneer Woman

Buttermilk Gravy Pioneer Woman / 4 cups all purpose flour 1 1/2 tsp salt 2 1/2 tsp baking soda 1 1/2 tsp baking powder 1/3 cup shortening 1/3 cup cold butter (5 1/3 tablespoons), cut into pieces 1 1/4 cups buttermilk.