Mix lukewarm milk with sugar and yeast and let stand for a few minutes until frothy.
Using a hand mixer with dough hooks or in a food processor: mix the milk with the flour and finally the salt into a smooth batter.
Cover the bowl with cling film and a slightly damp tea towel. Put in a warm place and let it rise for at least 1 hour.
Heat the oil in the deep fryer or in a large (frying) pan to 180 degrees Celsius / 355 Fahrenheit.
Scoop some batter from the bowl with two tablespoons or an ice cream scoop and fry the oil balls in portions for about 5 minutes until golden brown and cooked.
Scoop them out of the pan with a slotted spoon and drain briefly on a few sheets of kitchen paper.
Dust them with powdered sugar before serving and enjoy!