Heat the oil in a medium to large sized pot.
Fry the onions and green chillies with the whole spices.
Add in the ginger garlic paste and the spices except the kasoori methi or fenugreek leaves.
Mix this well and add the cleaned chicken and salt to taste.
Once the waters have evaporated, add in the diced tomatoes and cook this through.
Add a little water if needed to avoid the bottom of the pot from burning.
Now add in the potatoes, adjust salt, add some more water to allow the potatoes to cook soft.
Add water as needed throughout the cooking process. Always start with less and gradually increase the amount.
Sprinkle the kasoori methi.
Garnish with freshly cut coriander