Grate the butter with sugar, gradually adding egg yolks, sour cream and vinegar.
When all these ingredients are well grated, we gradually add flour.
Then, when the dough is very hard, press the rest of the flour with a pinch of salt.
We beat the dough with a roller to get air for about 10 minutes.
If we want to avoid this, it's a good idea to knead the dough for 12 hours before frying. Then Angel Wings comes out crisp and tasty.
Then divide the dough into 3 parts.
We fight each part on a cake with a thickness of about 3 mm. Cut out 15 x 5 cm strips and make a 4-5 cm hole along the length.
We put one end of our rectangle through the opening.
Fry on a well-heated key until golden brown.
There should be air bubbles in the dough, which means that the dough is well kneaded.
Put the fried biscuits on a paper towel to let them sniff out the rest of the fat.
When it cools down, sprinkle with powdered sugar.