Triple chocolate layer cake

Chocolate cake layer

• 60 g caster sugar
• 2 eggs, separated
• 1 tsp natural vanilla extract
• 40 g rice flour (see Tips)
• 20 g arrowroot flour
• 20 g cocoa powder
• 1 pinch salt

Dark and milk chocolate layers

• 150 g milk chocolate, broken into pieces (see Tips)
• 150 g dark chocolate, broken into pieces
• 500 g pouring (whipping) cream
• 80 g salted butter

White chocolate layer

• 3 tbsp water
• 1 ½ tsp gelatine powder
• 150 g white chocolate, broken into pieces
• 150 g pouring (whipping) cream
• cocoa powder, for dusting