Mix and sift flour, baking powder and salt; rub in Cottolene with tips of fingers, add milk gradually, mixing ingredients with a knife. Turn on a slightly floured board, knead slightly, pat and roll to fit top of pudding dish. Butter bottom and sides of dish, put in peaches and sugar in layers. Cover with dough; press edges over edge of dish and steam one hour. Serve in dish in which it was steamed. Serve with Foamy Sauce.