Chocolate Banana Cream Pie

Preparation

1. For the sponge base: Preheat the oven to 370° F/190° C (conventional oven). Whisk the eggs, sugar, vanilla sugar and salt until fluffy. Sift the flour and corn starch together. Fold into the egg mixture with the melted butter. Line a loose bottomed baking tin with baking paper. Pour the cake mixture into the cake tin and bake for approx. 35 minutes.
2. For the chocolate marquise: Whisk the cold QimiQ Whip and cold QimiQ Classic together until completely smooth, ensuring that the entire mixture is incorporated (especially from bottom and sides of bowl). Add the melted chocolate and continue to whisk until the required volume has been achieved.
3. For the banana custard: In a medium saucepan combine QimiQ Sauce Base, banana puree and lemon juice. Mix corn starch with sugar, add to cold liquid mixture and whisk till smooth. Bring to a boil over medium heat, whisking constantly until thick or desired consistency is reached.
4. In a small mixing bowl temper egg yolks with 100 g of banana mixture, return tempered mixture to saucepan. Place saucepan over medium heat while stirring mixture constantly till simming and remove from heat. Process with immersion blender and cool completely.
5. For the banana custard mousse: Lightly whip the cold QimiQ Whip until completely smooth, ensuring that the mixture is completely incorporated (especially the bottom and sides of bowl). Add the banana custard and continue to whip until the required volume has been achieved. Toss banana slices in lemon juice and then fold gently into custard mousse.
6. For the Vanilla Chantilly: Lightly whip the cold QimiQ whip and sugar until completely smooth, ensuring the entire mixture is incorporated (especially from bottom and sides of bowl). Add the remaining ingredients and continue to whip until the required volume has been achieved.
7. To construct the gateau: Cut a 9-inch circle of sponge base and place inside 9-inch cake ring with 10-inch cardboard cake disk underneath. Pour in layer of Chocolate Marquise over sponge base and chill for 1 hour.
8. Spoon in Banana Custard Mousse and spread evenly over the layer of Chocolate Marquise.
9. Top with Vanilla Chantilly Cream and spread smooth. Chill for at least 4 hours, preferably over night.