Ingredients
For the frosting
400 g (3¼ cup) Powdered sugar
80 g (⅔ cup) Cocoa powder
150 g (1⅓ sticks) Softened butter
100 g (⅓ cup + 1½ tbsp) Boiling water
60 g (2 oz) Melted dark chocolate - I use 75% cocoa chocolate.
½ tsp Salt
Method
For the frosting
Bring some water to a boil and set aside.
In a large bowl, mix cocoa powder, sugar, salt and soft butter.
Add the hot water, melted chocolate and whip.
Refrigerate the frosting for at least half an hour, or until thick enough to spread.