Preparation of cupcakes
Prepare muffin tins and preheat oven to 180 degrees (convection oven: 160 degrees).
Mix the butter, sugar and a good dash of vanilla extract together. Add the eggs and mix well, too. Then add the flour with baking cocoa, baking powder and salt and mix alternately with the milk until you get a uniform mixture.
Divide the batter among the muffin cups and bake them in the preheated oven for about 20 minutes. Then leave to cool.