Fish gravy (or fish curry/Meen Kuzhambu) is a, rich, tangy, and spiced sauce, commonly featuring a base of onion, tomato, and tamarind, often enriched with coconut or coconut milk for creaminess. It is typically seasoned with curry leaves, mustard seeds, and fenugreek, creating a savory, pungent, and slightly sour flavor profile that complements firm fish.