Guatemalan Hot Chocolate - cooking recipe

Ingredients

2 ounces unsweetened chocolate (2 squares)
2 tablespoons water
1/2 cup sugar
1 tablespoon cornstarch
2 cups coffee, freshly brewed
1 1/2 teaspoons cinnamon
1/2 teaspoon vanilla extract
1/8 teaspoon salt
3 cups hot milk

Preparation

Grate the chocolate into top part of a double boiler over boiling water. Add the water until a smooth paste is formed.
Mix sugar and cornstarch. Add to chocolate paste.
Gradually stir in the coffee. Beat until smooth. Cook about 5 minutes, stirring occasionally.
Stir in cinnamon, vanilla, salt, and milk. Blend thoroughly.
Cook mixture for for about 20 minutes, stirring occasionally.
Before serving, beat with rotary beater until frothy.