Separate the eggs, placing the whites in a small bowl.

In a large bowl, combine flour, baking powder, baking soda, and salt.

In another bowl, mix buttermilk and egg yolks.

Stir the wet ingredients into the dry ingredients until a creamy batter forms.

Beat the egg whites with sugar until stiff peaks form.

Gently fold the beaten egg whites into the batter, ensuring not to overmix.

Heat an Aebleskiver pan and grease it lightly.

Pour batter into each mold.

Fry until golden brown on one side, then rotate to cook the other side.

Cook until golden brown on both sides and cooked through.