Milk (skim, whole, 2%, whatever you prefer)
Good quality dark chocolate (like Ghiradelli, Lindt..)
Heavy whipping cream + sugar
Real vanilla extract
Unsweetened cocoa powder
For each mug of cocoa:
Measure how much milk you'll need by filling each mug 3/4 full and pour milk into saucepan. Break up 1 1/2 ounces chocolate per serving, add to milk and warm over medium-low heat.
Meanwhile, whip 1/8 cup cream until soft peaks form. Add 1 tablespoon sugar and whip in.
To serve: Ladle cocoa into mugs, top with whipped cream and finish off with a dusting of powdered cocoa.