Cut the onion,tomato,green chillies and potato into very small pieces

Add 1 tsp oil into pan add jeera after that add onion and green chillies.wait till it turns golden brown.

Then add tomato and saute it for 5 mins and then add potato pieces.

After that add salt,kashmiri red chilli,haldi,red chilli powder cook it for 15 mins then add chat masala over it.