Champurrado

Ingredients

 * 4 squares unsweetened chocolate
 * 240 ml Sugar
 * 2 tbsp cornstarch
 * 960 ml black coffee
 * 2 tbsp ground cinnamon
 * 1 large piece vanilla bean
 * pinch of salt
 * 1.4 L hot milk
 * Ground cinnamon for garnish

Directions

 * 1) In a double boiler over low heat, melt the chocolate in a little water.
 * 2) Combine the Sugar and cornstarch and add to the chocolate, mixing well.
 * 3) Add the coffee, stir well and heat for 10 minutes.
 * 4) Add the cinnamon, vanilla, salt and milk, and cook over medium heat for 35 minutes, stirring occasionally.
 * 5) Remove the vanilla bean and serve in cups, sprinkled with cinnamon.