In the top of a double boiler place the chocolate morsels stirring till melted
In the meantime heat the heavy cream until little bubbles show on the side of the pan
Add heavy cream to chocolate and blend with a whisk til smooooooth
Cool on counter top overnight
I prefer to use a box cake mix like Duncan Heinz rich dark chocolate variety then split into 4 layers for frosting. Yes, it's very rich, but who cares !