Mix the yeast and sugar with half of the water. Set aside for 10 minutes, then knead with flour, salt and the rest of the water to form a smooth dough. Let go for 45 minutes. Knead in the apricots and hazelnuts and let the dough rise for another 45 minutes. Roll out the dough on a baking sheet lined with baking paper into a round flat cake about 1.5 cm thick and 25 cm large.
Bake in a preheated oven at 200 ° C for about 20 minutes.