Castilian Hot Chocolate

Directions

1. 1
   Shift the cocoa and sugar together into a medium-sized saucepan.
2. 2
   Dissolve the cornstarch in the water, and stir into the cocoa and sugar until it is a smooth paste.
3. 3
   Begin heating the mixture, stirring it with a whisk, and gradually pour in the milk.
4. 4
   Continue stirring with the whisk as you bring the liquid to a simmer.
5. 5
   Allow the chocolate to simmer for about 10 minutes, stirring often, until it is thick, glossy and completely smooth.
6. 6
   Serve steaming hot in coffee mug.