Mexican chocolate, which is flavored with ingredients like cinnamon, almonds and vanilla, lends a distinct flavor to Stephanie Prida's rich custard. Look for it at Mexican markets and specialty-food stores. More Desserts from F&W Editors More Great Chocolate Desserts
In a medium saucepan, combine the whole milk with the heavy cream and bring to a simmer over moderately high heat.
In a small bowl, beat the egg yolks until combined. Slowly whisk in 1/2 cup of the hot milk, then transfer the mixture to the saucepan. Cook the custard over moderate heat, whisking constantly, until it is slightly thickened, about 2 minutes. Immediately add the finely chopped Mexican and bittersweet chocolate and remove the saucepan from the heat. Stir until the chocolate is completely melted, then strain the mixture through a fine sieve into a large glass measuring cup or bowl. Pour the chocolate mixture into 6 small bowls and refrigerate until the pots de crème are chilled, at least 6 hours or overnight. Serve the pots de crème with unsweetened whipped cream and chocolate shavings.
The pots de crème can be refrigerated for up to 3 days.