Source: Gourmet - November 1993

1 cup half-and-half
2 cups milk
1/2 cup strained fresh orange juice plus 2 (3-inch) strips
    orange zest removed with a vegetable peeler
6 ounces fine-quality bittersweet chocolate, chopped fine, plus,
    if desired, grated chocolate for garnish
1/3 cup Grand Marnier, or to taste
Whipped heavy cream for garnish if desired

In a large saucepan, stir together the half-and-half, the milk, the orange juice, the zest and a pinch of salt and bring the mixture just to a boil over moderate heat.

In a small heatproof bowl, whisk together the chopped chocolate and about 2/3 cup of the hot milk mixture until the mixture is smooth and whisk the chocolate mixture into the remaining milk mixture. Simmer the hot chocolate, whisking, for 2 minutes, discard the zest, and stir in the Grand Marnier. (For frothy hot chocolate, in a blender blend the hot chocolate in batches.)

Divide the hot chocolate among heated mugs and garnish each drink with some of the whipped cream and grated chocolate.