INGREDIENTS
•
2 teaspoons vanilla extract
•
1/2 teaspoon espresso powder
•
1/2 cup (3 1/2 ounces) sugar
•
3 tablespoons Dutch-processed cocoa
•
2 tablespoons cornstarch
•
1/4 teaspoon salt
•
3 large egg yolks
•
1/2 cup heavy cream
•
2 1/2 cups whole milk
•
5 tablespoons unsalted butter, cut into 8 pieces
•
4 ounces bittersweet chocolate, chopped fine