Mix flour, sugar, and yeast together.
Add warm milk and eggs, then knead the dough.
Add butter and continue kneading until the dough becomes smooth.
Let the dough ferment for 1 hour.
Chop the chocolate and prepare it.
Divide the dough and shape it into bread, placing chocolate inside.
Let it ferment again for 30 minutes for the second rise.
Bake in a preheated oven at 180°C for 15 minutes.