Lentil soup with fish head (maachher matha diye mug daal)

This dish is a minor variation of regular moong daal. But it tastes fantastic.

Ingredients:

Head of a large rohu (or head of any large freshwater fish with enough brains and flesh and not too bony)
Rest of the ingredients are the same as lentil soup.

Procedure:

Same as regular lentil soup, except that you have to boil the fish head along with the lentils. You may want to break up the head with a spoon in step 4.