Chocolate, hazelnuts and a bowl over hot water begin the baking lesson in Anna’s Delicious Chocolate Cake. Follow the kitchen prompts to melt chocolate with butter, then beat eggs, sugar and vanilla before combining the mixtures. Add flour, baking powder, nuts and chunks of milk and white chocolate, and transfer the batter to its tray. Bake the cake, cut a slice and finish the serving with a dusting of sugar.