Drain the cherries, collect the juice. Cream fat and sugar with the whisk of the hand mixer. Briefly stir in eggs one by one, alternating with 50 g flour. Mix 400 g flour and baking powder. Stir in alternately with the mulled wine. Swirl the cherries in 50 g flour and carefully fold into the dough. Fill the dough into a greased star-shaped form sprinkled with breadcrumbs (approx. 2 1/2 litres capacity; 27 cm from tip to tip), smooth it down.
Bake in the preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 60-70 minutes. Then allow to cool slightly, turn out of the mould and allow to cool completely. Mix egg white, icing sugar and 2-3 tablespoons of mulled wine or cherry juice until smooth. Pour 2 tablespoons of icing into the freezer bag. Spread the rest of the icing on the cake and let it dry. Cut a small corner from the freezer bag, decorate the cake with it and sprinkle with coloured sugar