Stir yeast and 100 ml lukewarm water until smooth. Mix flour, salt and sugar in a bowl and make a depression in the middle. Add dissolved yeast to the middle and mix with some flour from the rim. Cover with flour and leave to rise for about 15 minutes.
Add yoghurt and olive oil to the pre-dough and knead with the dough hooks of the hand mixer to a smooth dough. Cover the dough with foil and leave to rise overnight in the refrigerator.
Knead the dough on a floured work surface and divide it into 8 equally sized pieces. Form dough pieces into round rolls, then brush with water. Sprinkle with poppy seeds, sunflower seeds or sesame seeds as desired. Place rolls in a greased springform pan (26 cm Ø) and leave to rise in a warm place for 30-45 minutes until the rolls have grown considerably larger.
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 25 minutes. Remove the rolls, let them cool down for about 10 minutes and remove from the edge. Let them cool down on a cake rack. Serve with quark and cherry jam.