Mix all ingredients into a dough wich is not fully developed.
Dough temperature: as cold as possible.
Dough rest: approx. 10 minutes in refrigerator.
Fold the butter plastically before folding: laminate it, fold it twice in three (2 x 3). Let the dough rest in the refrigerator. After approx. 10 minutes laminate it again, fold it once in three (1 x 3). Let the dough rest again in the refrigerator.
Roll the dough into a slice with a thickness of approx. 6 mm. Protrude with a donut plug of desired diameter.
Final proof: approx. 30 minuten at approx. 30°C.
Fry approx. 9 minutes in oil at 180ºC.
After cooling down, fill with desired filling.