Par boil potatoes in water with a tsp of salt added.
Peel the boiled potatoes .
In a big bowl add yogurt, mustard oil,1 tsp lemon juice and all the spices in it.
Mix well and add the boiled potatoes in it.
Cover the bowl and let the potatoes marinate for 30 mint
If you want to make them instantly then add 1 tsp of dry roasted gram flour in it.