Triple chocolate layer cake

Name: Triple chocolate layer cake
Prep time: 35 min
Cook time: 5 h 20 min
Total time: 5 h 20 min
Yield: 12 portions
Ingredients: 2 eggs; 60 g caster sugar; 1 tsp natural vanilla extract; 40 g rice flour; 20 g arrowroot flour; 20 g cocoa powder; 1 pinch salt; 150 g milk chocolate; 150 g dark chocolate; 400 g pouring (whipping) cream; 80 g salted butter; 100 g pouring (whipping) cream; 3 tbsp water; 1 ½ tsp gelatine powder; 150 g white chocolate; 100 g pouring (whipping) cream; 50 g pouring (whipping) cream; cocoa powder