Ingredients:
 
4 cups whole milk
1/4 cup sugar
1 teaspoon vanilla
4-ounce bar of good quality dark chocolate broken into 1-ounce pieces
 
Method:

Pour the milk into a saucepan.
 Stir in the sugar and vanilla.
 Heat the milk slowly over low heat until it is just about to boil. Do not let it boil.
Remove from the heat and divide the milk into 4 mugs.
Serve each mug with a piece of the chocolate.