POTATO SOUFFLÉ

Put into a saucepan 3 or 4 cups of warm mashed potato and 1 tablespoon butter. Add the yolks of 2 eggs, 2 tablespoons cream (or milk), salt and pepper, and stir over fire until well mixed. Remove from the fire and add the well-beaten whites of the eggs. Heap in a buttered baking dish and let brown on the top in the oven.