Boil tomato, allow to cool and remove skin from

Now in grind tomatoes with chilli, ginger, garlic, make a thin paste, if need add 2/4tbs water it it

Now seive this paste,

Heat a pan add butter in it, crackle cumin seeds, add tomato puree in it, stir it, add rest spices at last add dilute corn flour, stir continuously, after 2min off the falme