Finely chop the chocolate. Finely dice the apricots. Chop hazelnuts. Beat the egg whites and 1 pinch of salt with the whisks of the mixer until stiff, finally add sugar and vanilla sugar
Line two baking trays with baking paper. Preheat the oven (electric cooker: 150 °C/circulating air: 125 °C/gas: see manufacturer). Mix nuts, apricots and half the chocolate. Mix with flour and carefully fold into the beaten egg white mixture.
Place approx. 1 teaspoon of macaroon mixture in heaps on each of the trays at a slight distance. Bake in a hot oven for 20-30 minutes one after the other.
Let it cool down. Melt the rest of the chocolate in a hot water bath, fill it into a disposable piping bag and draw it in strips over the macaroons. Leave to dry.