80 g cocoa powder 270 ml hot coffee 200 g all purpose flour 1 1/2 tsp baking soda 3/4 tsp baking powder 1 pinch of salt

3 eggs 225 g sugar 100 ml milk 80 g oil 1 1/2 tbsp vanilla 1 1/2 tbsp vinegar

400 g room temperature butter 65 g cocoa powder 265 g powdered sugar (you can add up to 300 g if you want more sweet) 105 g dark chocolate (finely chopped) 80 g heavy cream

175 g dark chocolate (finely chopped) 175 g heavy cream (boiled)