(CAUTION: the caramel may splutter a little when you add the cream.) Stir in the salt and vanilla and set aside to cool completely. Cream the butter and icing sugar together for at least 4- 5 ...
Whip the cream until soft peaks form, mix in the icing sugar and drop spoonfuls of the whipped cream on the cake, then dust with cocoa powder. Serve with the caramel sauce.