Add <quantity>250<unit>ml</unit></quantity> of milk to a small saucepan and warm it up over low heat until lukewarm

Crumble <quantity>21<unit>g</unit></quantity> of fresh yeast in a bowl and add <quantity>1<unit>tbsp</unit></quantity> of sugar

Add a little bit of the warm milk to the bowl and whisk to dissolve. Let the mixture sit for 10m to activate the yeast

Add <quantity>500<unit>g</unit></quantity> of all-purpose flour and <quantity>90<unit>g</unit></quantity> of sugar to a large bowl

Melt <quantity>75<unit>g</unit></quantity> of unsalted cubed butter over low heat with the rest of the milk

Add the melted butter and milk to the flour mixture and stir

Add the activated yeast and stir

Add <quantity>1</quantity> egg yolk and stir

Knead the dough until uniform. Shape it into a ball

Brush the dough with vegetable oil

Cover it with a kitchen towel and let it proof for 1h. The sweet yeast dough is ready

Use it to make buchteln, cinnamon rolls, or use your imagination!