For P. au gratin variation
— à la maréchale.—Prepare the potatoes as for Pommes Anna, and stew them very gently in butter till tender; now turn them out of the pan, and arrange them in a well-buttered fireproof dish in layers, dusting each layer with grated Parmesan, white and coralline pepper, and moisten with dissolved butter. When the dish is full, bake in a gentle oven for thirty minutes, and serve in the dish they were cooked in. Ordinary cold boiled potatoes are nice cooked this way, if the buttered dish is dusted with fine white breadcrumbs, finely minced parsley, grated cheese, and black and red pepper, the potatoes being laid in as before, finishing the top with crumbs, cheese, etc., and cooking it till it browns nicely on the top. This is known as P. au gratin.