Marinate the cleaned fish head with little salt and turmeric
In a dry heavy bottom pan, add the yellow mung dal and dry roast for few minutes. Dry roast the dal in a skillet over medium heat. You want the lentils to become fragrant and lightly golden without burning them.This roasted step is important. It gives Bengali moong dal its characteristic nutty aroma and deeper flavor. Once the dal is roasted, wash it gently. Don't scrub too much or else the aromatic flavor will go away
Boil the roasted mung dal with little salt and turmeric
To the same pan, now add the oil and once the oil heats up, very gently slide the fish head. Let it fry 2 to 3 minutes on one side, then flip and fry for 2 more minutes. Take it off the pan once done.
Next, add the cumin seeds, bay leaves and dry red chili. Let it sizzle for few seconds.
Add the onion, season with salt and let it cook for 2 minutes or until softened.
Next, scatter the tomato and cook for 1 to 2 minutes or until the onion and tomato are softened.
Add the fried head and based on your choice, you could either break it down or leave it whole.
Pour the boiled dal and bring it to boil.
Add the slit green chili and let it simmer for 5 minutes. Based on your choice of consistency for the dal, you can add more water.
Taste for salt and add more if needed.
Once done, add the ghee and mix it one more time.
Macher Matha diye Dal is ready to be served with steamed white rice.