Scald milk; add sugar, salt and butter. Add yeast to warm water. Stir in milk
mixture, egg yolks and 2 cups flour. Add remaining flour. For jelly filled, roll
dough about 1/4-inch thick. For regular doughnuts, roll about 3/8 to 1/2-inch thick
Jelly Doughnuts: Place 1 teaspoon jelly on circle and brush top circle with egg
whites on one side and seal. Fry at 375 degrees F until done.