heat the pan (kadai )on stove
add 2-3 tablespoon of oil in pan (kadai) and heat it up
add cumin seeds (jeera) and fry it until its color changes to golden brown.
add chopped green chilies and chopped ginger and cook until its raw flavors goes away
Add 2 tablespoons of coriander powder
Add 1/2 teaspoon of red chili powder
Add 1 teaspoon of garam masala powder.
Mix it all and cook it until its raw flavour goes away
Add roughly mashed potatoes in it. Do not mash it in very small pieces
Mix it well
Add 1 teaspoon chaat masala powder
Add 2 teaspoon dry mango powder(amchur)
Add roasted crushed cumin seeds
Add raisins (kishmish or dry grapes) in the mixture (completely optional)
Add salt on top of it and mix it well
Turn off the gas stove and keep the filling aside to cool