Peel and chop drumsticks and potato. Rinse and keep them immersed in water to avoid discoloration.
Heat 1 tsp oil in a pan. Add 1 large chopped onion and sauté on low heat until soft.
Add chopped garlic and ginger. Then add grated coconut and sauté until aromatic.
Add ½ cup coriander leaves and sauté briefly.
Let the mixture cool completely. Grind to a fine paste Set aside.
Heat 1 tsp oil in a pan. Add cumin seeds and let them splutter. Add 1 small chopped onion and sauté until soft.
Then add chopped tomato and cook until mushy.
Add the drumsticks and potato, turmeric powder, and salt. Mix well. Add about ½ cup water. Cover and cook unti lthe vegetables are tender.
Add the ground masala paste. Rinse the mixer jar with a little water and add that too.
Stir in Malvani masala (or red chilli + garammasala mix).
Let the curry simmer and come to a gentle boil.
Garnish with fresh coriander leaves. Serve hot with rice or chapatis.