Hot Fudge Sauce

This was an OK hot fudge sauce, but nothing too thrilling. Typically I make my kids hot fudge sauce by meling chocolate chips and mixing in some skim milk. This hot fudge sauce differed in that you start with unsweetened chocolate squares, butter, sugar, melted on the double boiler. Addition of boiling water and corn syrup gave a beautiful looking sauce. It thickened nicely when applied to vanilla ice cream. But taste wasn't too exciting. It mostly tasted sweet, and no a strong chocolate flavor (despite lots of chocolate among the ingredients). Perhaps a bit of salt would have improved it.