First dissolve the yeast with a little lukewarm water and 1 teaspoon sugar.
Sift the flour into a bowl. Add the quark, egg, the remaining sugar, butter and salt. Add the yeast that has now dissolved and stir to a smooth batter. Let rise in a warm place for about 60 minutes.
Meanwhile preheat the oven to 180 ° C.
Shape the dough into approx. 8 rolls of equal size. Brush with a whisked egg yolk or condensed milk and bake for about 20 minutes.