Wash tomatoes and Boil it on medium heat for 5-7 minutes or until cooked (soft enough for the skin to peel itself)
Turn off the heat. Cover it and leave for 2-3 minutes. Do not throw any of the water.
Peel the skin and grind it well.
Add sugar, pepper amd salt (according tp taste). Add the remaining water. Let boil for 5 minutes.
Serve hot. You can sprinkle some pepper powder on the top or place curry leaves on top.