1. Melt the butter and put it aside to cool of slightly
  2. Preheat the oven to 180 degrees C
  3. Mix the eggs and sugar until it becomes a smooth mix
  4. Add the dry ingredients (baking cocoa, sugar, flour, and vanilla sugar)
  5. Add the melted butter
  6. Mix together into a uniform batter, (no longer!)
  7. Bake in the midle of the oven for 20-30 minutes.