Glaze: mix a Cup of espresso (100 g) and 100 g of powdered sugar.
Instructions
Especially for the cake prepare a Cup of double espresso. Pour into a blender. Then add the butter (always at room temperature), a Cup of sugar, flour, baking powder and 4 eggs. All this mix in a blender until smooth.
The cake pan should be greased with butter. Pour the mixture from the blender and put into the oven.