In a medium pan heat 2 cups of milk and add sugar

Dissolve custard powder without any lumps (use a whisk) When milk starts boiling add dissolved custard mixture and vanilla.

Whisking constantly, cook over medium heat until the first large bubble forms and sputters.

Reduce heat to low; still whisking, cook 1 minute. Pour into dish.

In a small pan heat condensed milk, 1/2 cup milk and 1/4 cup sugar. Mix corn flour and cocoa powder in a 1/2 cup milk.

When the milk in the pan start boiling add the corn flour mix and stir quickly and keep stirring till it becomes thick.

Pour over the custard pudding and garnish with some nuts. And leave it in the refrigerator.