Boil mealy potatoes very soft, peel and mash them. To four good-sized
potatoes, put a piece of butter, of the size of a hen's egg, a
tea-spoonful of salt. When the butter has melted, put in half a pint of
cold milk. If the milk cools the potatoes, put in a quarter of a pint of
yeast, and flour to make them of the right consistency to mould up. Set
them in a warm place--when risen, mould them up with the hand--let them
remain ten or fifteen minutes before baking them.