Chocolate Cornstarch Pudding

A favourite of my family's for a long time.  Simple to make.  Just make sure you heat slowly so it doesn't scorch the milk.

1/2 cup white sugar
3 tbsp unsweetened cocoa powder
1/4 cup cornstarch
1/3 tsp salt
2 3/4 cups milk
2 tbsp butter
1 tsp vanilla extract

• In a saucepan, sift sugar, cocoa, cornstarch and salt.  Stir together.  Place over medium low heat and stir in milk.  Bring to a boil slowly and cook stirring constantly until mixture thickens enough to coat the back of a metal spoon.  Remove from heat and stir in butter and vanilla.  Let cool briefly and serve warm or cover with plastic wrap and chill until serving.