Abernethy Biscuits (Scotland) 1 cup flour 1/2 cup butter 3 tablespoons granulated sugar 1 teaspoon cream of tartar 1/2 teaspoon baking soda 1 tablespoon milk Pinch of salt Sift flour, salt, baking soda and cream of tartar together. Rub in butter until mixture looks like bread crumbs. Dissolve sugar in milk; stir into flour/butter mixture. Form into stiff dough. Roll out to a thickness of 1/4 inch. Cut into squares; prick all over. Bake at 350 degrees F for 20 minutes. Yields about 10 biscuits.