Grind all the ingredients for gravy into a fine paste
Cut the boiled potatoes into two pieces (optional)
Heat the oil in a frying pan and fry the potatoes until golden brown
Add turmeric powder, chili powder, garam masala and fry for another minute
Now add the ground paste and fry for few more minutes
Add yogurt, corn flour, mint leaves, salt and cook for 5-7 minutes
Add kasoor methi
Sprinkle the coriander leaves
Serve hot with plain rice