Combine 300g flour and 80g sugar in a mixing bowl.

Warm water until lukewarm and whisk in the yeast until dissolved.

Add eggs and 15g butter to the flour mixture.

Pour in the yeast mixture and whisk to combine.

Stir until a sticky dough forms.

Add the remaining 200g flour and 175g butter pieces to the top of the dough.

Cover and rest for 20-25 minutes.

Incorporate the butter and flour into the dough until well combined and no longer sticky, adding a little flour if needed.

Press the dough into a 12" x 12" square on a lightly floured surface.

Sprinkle with pearl sugar.

Roll the dough into a sausage shape.

Cut into 100g pieces and form into balls.

Rest the dough balls, covered, for 15 minutes.

Refrigerate overnight.

Heat the waffle iron.

Place a dough ball in the iron and cook until golden brown and the sugar has caramelized.

Carefully remove the waffle due to the hot sugar.

Serve as is, with powdered sugar, or melted chocolate.