Add the tamarind and water to a pot. Bring it to boil and let it cool.
Sieve this mixture while pressing and mashing the tamarind.
Throw away the pulp and rinse the pot.
To the same pot, add the tamarind pulp back.
Add all other ingredients- Jaggery, dry Ginger & 1 table spoon Roasted Jeera Masala(Bhuna Jeera Masala).
Bring it to a boil, stirring in between
Add more water if you want to make the chutney thinner.
Adjust the Jaggery, salt and Roasted Jeera Masala.
Taste and adjust the salt, sugar and spice.
It should taste sweet and sour at the same time.