Dissolve yeast in warm cream, add to yolks, add flour gradually, then add melted butter, more flour while beating well until dough no long clings to the spoon.
Set aside and let rise for about 2 hours
Take a small piece of dough and flatten it out in the palm of your hand.
Put about a teaspoonful of jam in the center and fold in the edges of the dough until a ball is formed with the jam in the center.
Fry the balls in deep fat (about 350° F) about five minutes
When done sprinkle with a powdered sugar and butter icing.