Danish Aebleskiver

This is from Rasmussen's Bakery, my favorite in Solvang.

2 1/2 cups flour
1/2 tsp salt
1 1/4 tsp baking soda
3/4 tsp baking powder
2 cups buttermilk
2 eggs, separated
3 Tbsp melted butter

Sift dry ingredients. Beat egg yolks, add to milk. Combine with dry ingredients, add melted butter. Beat egg whites until stiff. Fold into batter. Fry in aebleskiver pan.