Clean the Malabar spinach, wash and chop them finely. Chop the onions and get the other ingredients ready.
In a pan take the oil and add the mustard seeds, urad dal, and red chillies. Once the mustard splutters add the onions and saute till they become translucent.
Next, add the chopped greens, turmeric powder, salt, and tur dal(if you are using it) and saute for half a minute. Add a bit of water and let it cook.
Once it is cooked, add the fish and the cumin and garam masala powders. Saute till the fish is completely mixed into the greens.
Taste test and turn off the flame. Serve with rice.