Combine strong flour, sugar, salt, and dry yeast in a bowl and mix well.
Add milk and butter to make the dough.
Let the dough rise for the first proof.
Divide the dough into six pieces, shape them into rounds, and let them rest briefly.
Roll the dough into triangles, place butter inside, and roll them up.
Brush water over the bread and sprinkle coarse salt on top.
Let it rise for the second proof.
Bake in a preheated oven at 180°C for 15 minutes.