This is the cake a prepared for LittleGrouch's birthday party. He wanted a chocolate cake, and as he loves the "Cars" movies, I decided to decorate the cake with his favorite characters.
Six months ago: Broccoli and Shrimps
125 g dark chocolate, coarsely chopped
750 g heavy whipping cream
5 eggs, separated
160 g sugar
1 dash salt
grated zest of 1 orange
3 tbsp orange juice
60 g flour
60 g corn starch
20 g cocoa powder
1/2 tsp baking powder
5 tbsp eggnog liquor, optional
50 g milk chocolate, chopped
50 g white chocolate, chopped
Heat dark chocolate and cream over low heat until chocolate is melted. Let cool and chill for 8 hours. Line the bottom of a 26 cm spring form with parchment paper. Preheat oven to 400F. Whip egg whites with 3 tbsp cold water until very stiff, slowly adding sugar and salt. Fold in egg yolks, orange zest and juice. Mix together flour, starch, cocoa powder, and baking powder. Sieve onto egg mixture, and fold in. Pour dough into spring form, flatten, and bake for 15-20 minutes. Let cool. Whip chocolate cream, slowly adding liquor if using. Cut chocolate cake horizontally into three layers. Fold milk chocolate and white chocolate into half the whipped chocolate cream. Spread half of this cream onto one chocolate cake layer, place second cake layer on top, and spread second half of whipped cream with chocolate pieces on top. Top with remaining cake layer. Spread half of the remaining chocolate cream on top and around the cake. Use remaining cream, chocolate sprinkles and chocolate ornaments (see below) to decorate the cake. Keep refrigerated until just before serving.
(If the cream doesn't stiffen enough when whipping, sprinkle 1 envelope gelatin over 3-4 tbsp eggnog liquor or milk. Let stand for 5-10 minutes. Then carefully heat, but do not boil, until gelatin is dissolved. Stir 3-4 tbsp whipped chocolate cream into the gelatin, then fold gelatin into whipped chocolate.)
"Cars 2" characters chocolate ornaments
To create the car ornaments, I used free(!) coloring book pages I found on the internet. I just printed them out in the size I wanted. I heated some water in a small glass bowl in the microwave, filled dark chocolate in small ziploc bags, sealed the bags and placed them in the water until the chocolate had melted. I placed wax paper over the printouts, cut off one corner of the chocolate bag, and traced the outlines of the cars. Let the chocolate ornaments cool at room temperature or in the fridge. The ornaments are rather fragile, so be sure to not make them too thin. They break easily when you try to peel them off the wax paper.