12 Fish Curry Recipes From India's Coasts and Beyond

This is the decision that makes or breaks the pot, and almost everyone gets it wrong the first time. Firm, oily, small-boned varieties are your friends here: kingfish, seer, mackerel, sardine, pomfret, and thick-cut swordfish or salmon. They carry connective tissue and fat that hold together through a simmer. Delicate flakers such as sole, basa, plaice or thinly cut tilapia loin will disintegrate the moment the gravy moves, which is exactly why my first attempt ended up as soup.

Bones and skin help far more than people expect. A steak cut straight across the bone holds its shape under heat, and the collagen leaching out of that bone thickens the gravy and adds a savoury depth that no powder can fake. If you can only find fillets, cut them into generous two-inch pieces rather than neat small cubes, because surface area is what falls apart first.

Freshness matters in a way you can check with your own hands. The flesh should spring back when pressed, the eyes should look domed rather than sunken, and the gills should be wet and red rather than brown. If it smells of ammonia, walk away, because no amount of tamarind will rescue it. Frozen-at-sea fish is very often better than the tired chilled tray at the back of a supermarket counter.

Salt and turmeric your pieces about fifteen minutes ahead, then pat them properly dry. This firms the surface proteins slightly and seasons the flesh itself rather than just the gravy around it. Then, whatever else you do, stop stirring. Slide the fish in, swirl the pan by its handles, and let it poach quietly. Eight to ten minutes for two-inch pieces is plenty.

Almost every dish here is a variation on one of three bases, and once you can name them you can start improvising. Coconut, whether as milk or freshly ground paste, gives sweetness, body, and a fat that carries chilli heat gently. It is the Kerala and Mangalore signature. Its one rule is temperature: hold the pot below a boil once the milk is in, because rolling heat splits the emulsion and leaves grease floating on top and grit underneath. Add thick coconut milk in the last five minutes, off the heat if you can.

Tomato gives you acidity plus a glossy, clinging texture, and it is the workhorse of the north. The technique that separates a good pot from a flat one is the bhuna: cook the onion, tomato, ginger and garlic mixture over medium heat, stirring often, until the oil visibly separates and pools at the edges. That takes a full twelve minutes and it is not optional. Skip it and your fish masala tastes raw and faintly metallic no matter how much garam masala you add afterwards.

Tamarind, kokum and vinegar are the sour bases, and they do what the other two cannot: cut the oiliness of the fish and keep the flesh firm. Goa and the Konkan coast use them heavily, and Parsi cooking reaches for cane vinegar. Add sour ingredients early enough to cook out their rawness, but not so early that they tighten the protein for twenty minutes.

The best pots layer two of the three. Goa marries coconut and tamarind. Bengal marries mustard and tomato. Nothing stops you from doing the same at home once you understand what each element is actually contributing to the finished bowl.

Kerala cooks in coconut oil and finishes with curry leaves and mustard seeds crackled in more of it. The souring agent is kudampuli, a smoked black fruit that tastes of nothing else on earth, though tamarind stands in perfectly well. The gravy is thin, the heat is moderate rather than fierce, and it is traditionally cooked in an unglazed clay pot that lends a faint earthiness. Ask anyone how to make fish curry in Kerala and they will tell you, before anything else, to cook it a day early.

Goa is Portuguese-inflected and unashamedly red. Kashmiri chillies for colour rather than fire, coconut for body, tamarind or kokum for sour, and often a splash of vinegar at the end. It is the loudest of the three, and it wants plain rice underneath to give all that sourness somewhere to land. The paste freezes brilliantly, which is the real reason to make it in bulk.

Bengal does something almost nobody else does: it makes the cooking fat itself the flavour. Mustard oil, heated until it stops smelling raw and sharp, plus nigella seeds, turmeric and slit green chillies. Sometimes ground mustard seed goes in too, giving that unmistakable sinus-clearing edge. The gravy is thin and pale yellow, the pieces are usually rohu or hilsa cut across the bone, and the whole thing is done in twenty-five minutes.

Beyond these three, Punjab browns its onions and slows everything down, Parsi kitchens grind coriander and vinegar into a tangy paste, and Thailand replaces the Indian spice cabinet with lemongrass, galangal, lime leaf and fish sauce. Different vocabularies, one shared grammar: aromatic fat, a base, a souring agent, and the fish added last.

Rice, almost always. Plain steamed short-grain in Bengal, matta or red parboiled rice in Kerala, and long-grain basmati up north. The reason is structural rather than merely traditional: these gravies are thin and sour, and rice absorbs them in a way that bread simply cannot manage. If you want bread anyway, a soft appam or a lacy neer dosa suits the coconut-based pots far better than a dense whole-wheat roti ever will.

Sides should stay simple, because the pot is already doing plenty of talking. A dry stir-fried vegetable, a spoonful of lime pickle, some sliced raw onion with lemon squeezed over it, and plain yoghurt on the side if the chilli got away from you. Resist the urge to serve two gravies at the same meal; they blur into each other and you taste neither properly.

Storage is where these dishes really shine. Nearly every one of them tastes better the next day, because the ground spices hydrate fully and the sourness settles into the flesh instead of sitting on top of it. Cool the pot to room temperature within an hour, then refrigerate for up to three days in a glass or steel container, never aluminium, which reacts with tamarind and leaves a metallic edge.

Reheat gently on the stovetop over low heat, covered, and add a splash of water because the gravy always tightens overnight. Do not microwave on full power; the fish turns rubbery and the coconut splits. Freezing works well for the ground pastes and for tomato-based gravies, up to three months, but coconut milk gravies separate on thawing. Freeze the base, cook the fish fresh, and you get the best of both worlds.