Warm the milk.

Add sugar and fresh yeast to the warm milk.

Mix well until yeast is dissolved.

Combine the milk mixture with flour, vanilla sugar, egg yolks, and melted butter (or margarine).

Mix all ingredients together in the order listed.

Ensure all elements are well incorporated, creating a smooth dough.

Let the dough rise in a warm place for at least 3 hours to allow fermentation.

Beat the egg whites until stiff peaks form.

Gently fold the stiff egg whites into the risen dough using a fork.

Add pearl sugar and a pinch of salt to the batter.

Mix gently to distribute the pearl sugar and salt evenly without deflating the egg whites.

Preheat the waffle iron according to manufacturer's instructions.

Ladle the batter onto the hot waffle iron.

Cook the waffles until golden brown and crispy according to your waffle iron's settings.

Serve immediately.