HOT FUDGE SAUCE

Finely chop the bittersweet chocolate. 

Put cream, butter, brown sugar and sugar in a saucepan and bring to a simmer.  Once the sugars are fully dissolved add the bittersweet chocolate and stir until melted. 

Off the heat mix in the cocoa powder and espresso powder.  Put back on heat and stir until shiny and thick.   Serve while warm or store in the refrigerator.