Dark Chocolate Mint Drink

1 3/4 cups whole milk2 tablespoons packed julienned fresh peppermint leaves2 ounces dark chocolate (61 to 66 percent), gratedMarshmallowsBring milk to a boil in a small saucepan over medium heat. Remove from heat and whisk in the mint leaves. Cover the top of the pan with plastic wrap and let steep for 15 minutes.After 15 minutes, remove the wrap and bring the milk back to a simmer. Pour into a 1-quart clear vessel; add the chocolate.Blend with an immersion blender until the chocolate has melted and the drink is smooth.Put a marshmallow into each cup. Holding a fine-mesh sieve over each cup, pour the drink over the marshmallow and serve.Serves two.?Chocolate Obsession? by Michael Recchuiti and Fran Gage(2005 Stewart, Tabori and Chang, $35)