Preheat the oven. In a bowl mix butter and the sugars using low hand mixer. Once creamy add Vanilla and the eggs.

In a separate bowl shift the flour, cocoa, baking soda and baking powder. Add the dry ingredients to the wet ingredients and mix with a mixer. Add the coffee water Add the sour cream and the chopped chocolate.

Bake for 30 to 40 minutes at 175 degrees.