4 1/2 cups whole milk
3/4 cup sugar
2/3 cup hot chocolate or cocoa mix, plus more for sprinkling
1/3 cup cornstarch
5 large egg yolks, beaten
2 teaspoons pure vanilla extract
Whipped cream, for topping
For best results, don't use hot chocolate or cocoa mixes that contain powdered milk or other dairy products, which can change the structure and texture of the pudding.