1. Combine 2 cups milk, 2/3 cup of cocoa and 2/3 cup of granulated sugar in a saucepan over medium-low hear. Bring to a bubble, reduce heat to low and simmer, stirring for 2 to 3 minutes. Skim off any skin that might form on top of the mixture.
2. Pour 1-3/4 ounces of Irish Mist into each of two 12-oz. mugs or glasses with handles. Pour half the hot cocoa mixture into each glass, and mix well.
3. Top with a dollop of whipped cream, and enjoy.