Mix butter and sugar with the whisk of the hand mixer. Mix flour and salt. Knead orange zest and flour with the dough hooks of the hand mixer into the butter. Chill for about 30 minutes. Roll out dough 5 8 mm thick and cut into strips (approx. 7 x 2 cm).
Put them on 2-3 baking trays lined with baking paper at a distance of approx. 2 cm and prick holes in the biscuits with a wooden stick. Bake the trays one after the other in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for about 15 minutes. Take out the biscuits and let them cool down. Melt the chocolate coating over a warm water bath and decorate the biscuits
Waiting time approx. 45 minutes