Required: One pound of boiled potatoes. One ounce of butter. One egg and one extra yolk. Breadcrumbs. Salt and pepper.

Rub the potatoes through a sieve or mash them finely. Melt the butter in a saucepan, put in the potatoes with salt and pepper to taste. Stir the mixture over the fire until it is quite hot, then add the beaten yolk, and, if necessary, a little milk. Stir the mixture over the fire for a few minutes to cook the egg, then turn it on to a plate and let it cool. Flour the hands slightly, and shape the mixture into neat balls. Brush each over with beaten egg, and cover with bread-crumbs. Have ready a pan of frying-fat; when a faint bluish smoke rises from it put in the balls, two or three at a time, and fry them a pretty golden brown.

Drain them well on paper, and serve in a hot dish.