Boil the potatoes and cut them into bite-sized pieces.
Heat mustard oil in a pan to the smoking point and let it cool a bit.
Crush the coriander seeds between the palms of your hand to release their flavor. Add them to the oil.
When they begin to crackle, add in the chopped ginger and green chillies. Saute for a minute.
Add in the chopped onions and saute until translucent.
Next, add the boiled potatoes and mix well.
Now add in the dry masalas - salt, Kashmiri red chilli powder, turmeric powder, cumin powder, coriander powder, and amchoor powder. Mix until the potatoes are well coated.
Cover with a lid and cook on low heat for a few minutes so that the potatoes soak in the masalas.
Crush the kasoori methi and add it to the potatoes. Mix.
To finish, add in the coriander leaves. Mix well.
The Chatpate Dhania Aloo are ready to serve. Garnish with chopped coriander leaves and serve hot.