Step by step

Beat the egg yolks with the sugar and incorporate the sifted flour and cocoa powder

Tips
To get the best whipped cream, you should use very cold cream and a bowl which is just as cold. If you add a pinch of salt to the cream it will become stiff quicker when whipped.
Trivia
The Kinder sponge slice contains 118 calories and 7.8 per cent fat