Beat egg yolks. Add sugar and buttermilk.
Sift flour, soda and baking powder together. Add to egg yolk and sugar mixture.
Beat egg whites until stiff and fold into batter.
Place a small amount of fat or oil into the wells of the skiver pan and fill them 2/3 full of the batter. Place a teaspoon of applesauce on top of the batter, then barely cover with a dab of dough. Cook until bubbly. Turn carefully and bake on the other side.
Serve hot with jam or jelly or roll in powdered sugar.