Good-Cooking - Grand Marnier Hot Chocolate

Ingredients

• 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