Add 1 tablespoon oil (coconut or olive oil) and the oil heats up, add cumin seeds.
Now, add chopped or sliced onions and saute until they turn translucent. Add tomato paste and 3 tablespoons of water and stir well.
add the blended paste and mix well
Now, the gravy starts to thicken. Add ½ cup - ¾ cups of water as per your preference to get a perfect consistency.
Cook for another 1-2 minutes on medium flame add the cubed potatoes and mix well
Simmer for 2 minutes and switch off the heat. Garnish with coriander leaves.