- Heat oil in a pan add mustard seeds & let it splutter. Then add curry leaves sauté. Add onion & capsicum sauté well. Then add ginger & garlic sauté Add tomato sauté till soft. Add water if required. Add salt, turmeric powder, red chilli powder mix well. Add cumin, coriander, pepper powder & garam masala powder sauté. Add solam idli mix well. Finally add chopped coriander leaves mix well and off heat. Serve.