Pressure cook potatoes for 2 whistles and peel the skin, prick it here and there with fork.
Heat a pan with oil and roast the potatoes until golden.
Make sure you keep it turning in between to ensure even browning.
In the same pan, fry cardamom, cloves, fennel, jeera, cashews and onion. Grind it with little water to smooth paste.
Heat oil and temper with the items under ‘To temper’ table. Add finely chopped onion and fry till transparent.
Add ginger garlic paste and the ground paste and fry for 2 minutes in medium flame.
Add chopped tomatoes, salt and fry till mushy. Add chilli powder, turmeric, coriander and garam masala powders.
Fry in medium flame, till the oil separates from masala . Add curd little by little, frying for each time for 1/2 minute.
Add the roasted potatoes and add water(1 & 3/4 cups),bring to boil.
Simmer for 5 minutes and garnish with lemon juice and coriander leaves, after switching off the flame.