boiled potatoes chopped • onion sliced • Few curry • salt • hing • haldi powder • red chilli powder • Chettinad Masala • mustard seeds • oil • For masala :1 tbsp jeera,1 tbsp coriander,1 tbsp urad dal,1 tbsp chana dal,3-4 dried red kashmiri chilli,1/2 tsp black peppercorns