Potato Biscuit.
8 potatoes of medium size, mashed very fine.
4 tablespoonfuls butter, melted.
2 cups milk, blood-warm.
1 cup yeast.
Flour to make a thin batter.
2 tablespoonfuls white sugar.
Stir all the above ingredients together except the butter, and let the sponge rise until light—four or five hours will do; then add the melted butter with a little salt and flour, enough to make soft dough. Set aside this for four hours longer, roll out in a sheet three-quarters of an inch thick, cut into cakes; let these rise one hour, and bake.