Liquefy butter and chocolate using steam. Then beat with the eggs and granulated sugar and finally add the flour and cocoa powder.
Bake in small, greased dishes (approx. 7.5 cm in diameter and approx. 4 cm high) for about 7 to a maximum of 10 minutes in a preheated oven at 210 ° C hot air.
The core stays nice and liquid and tastes superb with fresh fruit or vanilla ice cream. Be careful: one small cake might not be enough.