Yeast: dissolve yeast in warm milk, then add flour.
Knead into a smooth dough and leave for 30 minutes at 25°C.
Dough: mix flour with sugar, vanilla sugar, salt, egg yolks, rum, milk and yeast.
Mix everything together and finally add melted butter.
Knead into a smooth dough and leave for 30 minutes at 25°C.
Then form donuts and leave for another 30 minutes at 25°C.
7. Fry in boiling oil and sprinkle with sugar.
