Mix all ingredients except baking powder and soda in a large bowl and let sit for several hours until very bubbly. Stir in baking powder and soda at last minute. Brush each section of the heated ableskiver pan with ample butter. Fill the molds 3/4 full with batter and cook over medium flame until batter swells and a crust starts to form. Use a wooden skewer or knitting needle to pierce the crust and flip each pancake, letting the batter spill into the mold to form the sphere. Continue cooking until done.