Grate the marzipan, stir briefly with butter until smooth. Add flour, sugar, egg and salt, knead everything into a smooth dough. Cover and chill for about 30 minutes. Roll out the dough thinly (approx. 2 mm) on a work surface dusted with flour and cut out approx. 30 circles (approx. 7 cm Ø). Cut circles in half and spread them on 3 baking trays lined with baking paper.
Bake one after the other in a preheated oven (electric range: 200 °C/ convection oven: 175 °C/ gas: level 3) for 8-10 minutes. Let them cool down. Stir the jam until smooth, put a blob on each half of the biscuits, place the other biscuits on top and press down lightly. Sift the icing sugar, add the egg white and stir until smooth with the whisk of the hand mixer. Take off 1 tablespoon of icing. If necessary, stir the rest of the icing a little thinner with 1-2 tbsp. water. Quarter the icing and colour it with food colouring pink, yellow, green and blue. Fill all 5 types of castings into disposable piping bags. Paint the contours of the fans with the white casting.
water. Quarter the icing and colour it with food colouring pink, yellow, green and blue. Fill all 5 types of castings into disposable piping bags. Paint the contours of the fans with the white casting. Decorate with sugar beads. Leave to dry. Fill with coloured cast, let dry
waiting time approx. 1 1/2 hours