Keralan Fish Curry

Three things cause fish to disintegrate in curry: cutting pieces too small, using soft-fleshed fish, and stirring with a spoon. Cut fillets into large 7–8 cm chunks — small pieces have more surface area and break apart faster. Choose firm white fish like cod, sea bass, or halibut instead of tilapia or sole. The most critical rule: never stir the curry after adding fish. Instead, hold the pan handles and shake the pan gently side to side — this moves the sauce around the fish without breaking it. Also, don't cook on high heat — a gentle simmer is all you need. The fish is done in 8–10 minutes.

Curry leaves and curry powder are completely different things — this is the most common confusion in Indian cooking. Curry leaves are fresh, aromatic leaves from the Murraya koenigii tree. They look like small, glossy bay leaves and have a unique citrusy, slightly smoky fragrance. You can find them at Indian grocery stores, usually sold as fresh sprigs. Some Asian supermarkets carry them in the produce section. Curry powder is a British-invented blend of ground spices like coriander, cumin, and turmeric — no Indian cook uses it for fish curry. If you absolutely cannot find curry leaves, use 2 bay leaves plus the zest of half a lime, but the flavor won't be identical.

Tamarind paste provides the signature sour note that balances the coconut milk's richness. The best substitute is a mixture of 2 tablespoons fresh lime juice with 1 teaspoon of brown sugar — the acidity comes from the lime while the sugar mimics tamarind's slight sweetness. Another option is 1 tablespoon of dried mango powder (amchur), which gives a similar fruity sourness. White wine vinegar (1 tablespoon) works in a pinch but lacks the depth. Kokum, if you can find it, is what Kerala cooks traditionally use — soak 3–4 pieces in warm water for 10 minutes and add the liquid to your curry.

Firm white fish works best for Keralan fish curry because it holds its shape during the 8–10 minutes of simmering. Cod, sea bass, halibut, and kingfish are ideal choices. Red snapper and swordfish also work beautifully. Salmon is not traditional and its strong flavor competes with the spices, but it can work — just reduce cooking time to 6–7 minutes since salmon cooks faster. Shrimp is a fantastic alternative — add them in the last 4–5 minutes of cooking. Traditional Kerala cooks use seer fish (king mackerel) or pearl spot, but any firm-fleshed fish from your local market will produce excellent results.

Fish curry keeps well in the refrigerator for 2 days in an airtight container. The flavors actually improve overnight as the spices meld together — it's one of those dishes that tastes better the next day. To reheat without making the fish rubbery, warm it gently over low heat on the stovetop. Never microwave fish curry on high — use 50% power in 30-second intervals, stirring the sauce (not the fish) between rounds. If the sauce has thickened too much in the fridge, add 2–3 tablespoons of water or coconut milk before reheating. Don't freeze fish curry — the fish texture changes dramatically when frozen and thawed.