Roughly grate the marzipan. Mix the egg yolk, lemon peel, cinnamon and salt with the dough hooks of the hand mixer until smooth. Pour into a piping bag with a large star-shaped spout. Line 1-2 baking trays with baking paper and spray on approx. 20 squiggles (approx. 5 cm Ø). Bake the trays one after the other in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 4 minutes.
Then turn the oven down (electric oven: 150 °C/ gas: level 1/ convection oven 125 °C) and bake in 5-6 minutes. Bring 40 g icing sugar and 4 tablespoons of water to the boil, simmer for about 2 minutes. Spread hot macaroons with it, cool down. Serve dusted with icing sugar as desired