In hotels and restaurants they make this basic tomato gravy in batches and store for few days. This tomato gravy is the base for all the gravies and curries you order at an restaurant. For example if you order for paneer butter masala, this gravy is used as base, to this they add the other ingredients like panner, kasuri methi, butter and heavy cream. With this basic gravy you can prepare as many gravies and curries as Channa Masala, Paneer Butter Masala, Peas Masala, Chicken tikka Masala, Lamb Curries etc.
Ginger piece-3"( Chopped)
Black pepper corns-1tsp
Dried Bay leaves-5
Boil the tomatoes in hot water for 3 mins or microwave tomatoes for 1 minute. Peel off the tomatoes skin and chop them. Add the chopped tomatoes, ginger, garlic and whole spices and 5 cups of water in a pan. Cook the mixture on medium heat till tomatoes are tender and cooked. Cool the tomato mixture, remove the whole spices and puree in blender till smooth consistency.