Steamed Chocolate Cake with Whipped Cream

Chocolate Cake

• 4 eggs, separated
• 100 g sugar
• 125 g dark chocolate (50% cocoa), cut in pieces (2 cm)
• 125 g butter, cut in pieces, plus extra for greasing
• 100 g plain flour
• 1 tsp baking powder
• 600 g water

Whipped Cream and Chocolate Ganache Filling

• 315 g whipping cream, chilled
• 80 g dark chocolate (50% cocoa), cut in pieces (2 cm)