9 c. sifted all-purpose flour
1/3 c. baking powder
4 tsp. salt
1/4 c. sugar
1 tsp. cream of tartar
1 c. nonfat dry milk
1 c. oil

Using a very large mixing bowl sift together flour, baking powder, salt, sugar, cream of tartar and dry milk; sift again. With pastry blender, cut in oil until mixture is consistency of cornmeal. Store in tightly covered container at room temperature. Mix will keep for 6 weeks. To measure pile mix lightly into cup and level with spatula.