Scotch Scones
["2 c. flour", "1/2 c. sugar", "2 tsp. cream of tartar", "1 tsp. soda", "3/4 tsp. salt", "1/2 c. butter", "1/2 c. sour milk or buttermilk"]
["Sift dry ingredients together.", "Blend in butter.", "Add sour milk.", "Turn out onto floured board.", "Pat or roll gently to 1/2 to 1-inch thick in a rectangle about 4 x 8 inches.", "Cut in 16 triangles.", "Place on baking sheet.", "Brush with egg wash.", "Bake in hot oven (400\u00b0) about 15 minutes.", "Makes 16 scones."]
["flour", "sugar", "cream of tartar", "soda", "salt", "butter", "sour milk"]