Line a baking tray (approx. 35 x 40 cm) with baking paper. Separate the eggs. Beat the egg whites, 4 tbsp. cold water and 1 pinch of salt until stiff, while pouring in 100 g sugar and vanillin sugar. Fold in the egg yolks one by one. Sift flour and baking powder on top and fold in almonds. Spread on a baking tray
Bake in the preheated oven (electric oven: 200 °C/circulating air: 175 °C/gas: level 3) for 10-12 minutes. Turn out onto a tea towel sprinkled with 3 tablespoons of sugar. Remove baking paper immediately. Roll up the sponge cake together with the cloth from the long side. Allow to cool down
Unroll the sponge cake. Spread the sponge up to a 2 cm edge. Sprinkle with spice. Whip the cream until stiff, pour in the cream firmer and 1 tsp. sugar. Spread on the puree. Roll up using the cloth. Cool for at least 4 hours.
Coarsely grate the marzipan, knead with 100 g icing sugar. Roll out to a square (approx. 40 x 40 cm) on some icing sugar. Place the roll on top. Roll into the marzipan, moisten the edges a little and press on. Cut off any excess marzipan. Melt the couverture with the plate-grease in a hot water bath. Cover the roll with it. Cool for about 1 hour. Cut out stars from the remaining marzipan. Decorate the roll with stars, chocolate rolls and cocoa before serving