Take a pressure cooker and steam cook all the vegetables with salt. Cook till 2 to 3 whistles and take sufficient water so that all the vegetables are covered in water. After 3 whistles remove and drain excess water.
Grind the coconut, green chillies and cumin seeds with a little water into a smooth paste.
Mix this paste and the rice powder with the yogurt. Mix the yogurt mixture with the steamed vegetables. Cook for a few minutes.
Heat the coconut oil in a pan, sauté the mustard seeds and curry leaves. As the seeds start spluttering, remove and pour into the vegetable mixture. Mix and serve hot.
Know more South Indian Dishes by typing in this search box.