For the Masala Powder:
Roast the cumin seeds, coriander seeds and peppercorns for 1 minute. Grind into a masala powder
How to Proceed?
Cut the tomatoes in half and place in 8 glasses of boiling water
Add the remaining ingredients including the masala powder and boil for a further 10 minutes
Break the tomatoes with a spoon
Boil again for 10 minutes