For the curd cheese golaches, dissolve yeast and sugar in lukewarm milk, and knead with remaining ingredients to form a medium-stiff dough.
Beat until the dough separates from the bowl, then cover and let rest for 45 minutes. Preheat the oven to 180 °C.
Mix the sugar, butter and yolks for the filling, then mix with the curd, sour cream and vanilla sugar.
Finally, carefully fold in the beaten egg white. Roll out the yeast dough and cut into squares. Place a tablespoon of the filling in the center, fold the corners together and twist a little.
Cover and let rise for about 15 minutes, brush with beaten egg and bake until golden brown.