-
Sift first three ingredients together.
-
Beat potatoes, eggs, sugar, melted butter together; add nutmeg and milk and stir.
-
Add sifted ingredients and stir until just blended; chill.
-
Preheat the oil to 375F in a large saucepan or stockpot.
-
Place about 1/3 of the dough at a time on a lightly floured board, sprinkle surface lightly with flour and roll to 3/8" thickness (the dough should be just stiff enough to handle; the softer the dough, the more tender the doughnut).
-
Cut with a doughnut cutter dipped in flour.
-
Fry until golden brown.
-
Drain on paper towels for a few seconds; roll in granulated or confectioners' sugar, if desired.