Into a medium pot, pour sugar, cornstarch and salt. Sift in unsweetened cocoa powder. Whisk to come thoroughly.

To the pot, gradually add a small amount of the milk and whisk to combine. Whisk in the rest of the milk. Whisk in the heavy cream.

Over medium heat, stir constantly until the mixture comes to a boil. Boil and stir for 1 minute. Reduce heat to low if necessary.

Into the egg yolks, add about two tablespoons of the hot liquid and whisk quickly with a fork. Repeat until eggs are heated. Add heated egg mixture to the pot while stirring constantly. Cook and stir for 1 minute.

Remove from heat. Stir in the chocolate chips until melted. Add the vanilla extract and stir to combine. Add the butter and mix through.

Spoon or ladle mixture into serving cups. Place plastic wrap directly on pudding to prevent skin from forming. Place in the fridge until chilled.

Serve topped with whipped cream, chopped nuts, some chocolate shavings and a cherry!