Put the yolks, 1 tablespoon of powdered sugar, vanilla sugar, salt and curd mass, add the sifted flour with baking powder and thoroughly mix to a homogenous state.
Form the obtained dough is smooth pellet. The center of each cake break (a glass, a glass) to a doughnut got a hole.
In a small deep pan pour vegetable oil and preheat it. Put in a fat piece of dough ? if it got up and flushed, you can start making donuts.
Fry the donuts in vegetable oil on both sides until Golden brown. Ready get cheese donuts with a slotted spoon, put on a cloth or paper towel to soak up the excess grease and then sprinkle with powdered sugar.