POTATO PUFF

1 pint of mashed potatoes, 2 oz. of butter, 3 eggs, 1/2 pint of milk, 1/2 a saltspoonful of nutmeg, pepper and salt to taste, and a dessertspoonful of finely chopped parsley. Beat the butter with a fork until it creams, mix the potatoes with the butter, whip the yolks of the eggs well with the milk, and stir in the other ingredients. Add the nutmeg, parsley, and seasoning, and last of all the whites of the eggs, beaten to a stiff froth. The potatoes, butter, eggs, and milk should be well beaten separately before being used, as the success of the dish depends on this. Turn the mixture into a buttered pie-dish, and bake it for 1 hour in a hot oven.