Marinate the fish head with turmeric powder and salt.Set aside in a separate dish.
Roast the moong dal/yellow lentils over very low flame.
Place a saucepan half filled with water over gas/stove top. Add in roasted moong dal.
Clear the white froth that has started to form now.
Add in turmeric powder,salt ,sugarand the garam masala powder.Let it simmer at med-low.Usually it needs 10-15 mints to cook the dal.
It would be better if you can fry the fish head beforehand.Fry them in hot oil,be careful while frying the fish head.Better ,cover it properly with lid and do the process at med-low.Take out and break into edible pieces.Add this to simmering dal.
Tempering the dal
Heat up a saucepan,add oil and cumin seeds,bay leaf,cloves,cinnamon stick and cardamom.Fry for 1 mints.add this to the cooked moong dal.Cover the saucepan and turn off the stove-top.
Serve it with garam rice or roti.