Hot Chocolate Balls are formulated to make a creamy, decadent, not too sweet cup of hot chocolate in about 2 minutes…  it is a very balanced, yet intense chocolate flavor. The problem with melting a chocolate bar into hot milk is twofold.  First, chocolate bars can be of varying quality and composition.  Often inexpensive chocolate bars (the kind by the register at the grocery store) are waxy or oily when melted because they contain little or no actual cocoa butter and leave a filmy residue in the cup and in your mouth.  The second issue is that even high quality chocolate bars are formulated to be eaten out of hand with no dilution in milk, so the chocolate flavor is much less intense and the flavor profile comes across your palate as particularly sweet.