Brigadeiro - a kind of sweet (Brigadier - small chocolate balls)

Ingredients:
        2 cans condensed milk
        4 egg yolks
        1 tbsp margarine (unsalted)
        2 tbsp chocolate powder
        Chocolate sprinkles

Directions:
        For Microwave oven: Mix everything well in a bowl.
        Microwave for 5 minutes. Mix again. Microwave again 5 minutes.
        Mix very well - until homogeneous.
        Cool, then make into balls and roll over the chocolate sprinkles.

        If not in Microwave: Mix and cook on top of the oven,
        NEVER stop mixing.