Makes about 1 1/2 cups
1 can (14 ounces) sweetened condensed milk
2 ounces unsweetened chocolate
1/2 teaspoon instant coffee
1 1/2 teaspoons vanilla extract
Heat condensed milk, chocolate, 3/4 cup of water, and coffee in a large saucepan or Dutch oven over medium heat stirring frequently, then constantly until sauce turns from grainy to creamy smooth. Remove from heat; stir in vanilla and adding water as needed to thin to desired texture. Serve.