Melt the butter & mix w/ the sugar & the milk. The resulting fluid shall be lukewarm.
Grate the zest of half of an organic orange.
Combine yeast-flour-mix, milk mix & orange zest. Add the egg. Add the additional flour. Mix well w/ the handheld electric mixer until all is combined in a smooth dough mess.
Flour a wooden board & put the dough on the board. Start rolling out the dough in an almost rectangular shape. Add some more flour to prevent the dough from sticking to the rolling pin.