Boil Milk on high flame. Take cocoa in a cup and add hot milk and make it to a smooth paste.

Once milk is boiled, add cocoa paste slowly making sure it does not become lump. Cook for 10 mins.

Then add sugar, butter. Keep it on high flame stirring it constantly to ensure what does not form.

When the milk boils for nearly 30 mins, it becomes a thick liquid and it starts coming out from the edge.

This is when you will have to remove if you are planning for fudge.

The liquid can be removed in 20 mins if you are planning to make a sauce for ice cream.