Soak tamarind in warm water for 30 minutes.

Squeeze out all the tamarind juice.

Take this juice in a sauce pan and heat it on a medium flame by adding water. It should get the consisitency of a sauce.

Keep stirring and bring it to boil.

Add jaggery, salt and chilly powder.

Heat for few more minutes.

When it becomes thick, turn off heat.

Heat little oil in a pan and add cumin seeds to it. Wait till good smell comes.

Pour it on top of the prepared chutney.