Secrets to Perfect Fish and Chips at Home

Start With the Right Potato

Great fish and chips begins long before the batter hits the oil. It begins in the bag of potatoes. Choose a floury, high-starch variety — Maris Piper is the classic for a reason, but King Edward, Rooster or any good chipping potato will serve you well. Waxy salad potatoes will give you pale, soggy chips, so leave those for the Sunday roast.

Cut your chips thick — roughly 1.5cm square — and keep them even so they cook at the same rate. As soon as they are cut, drop them into a bowl of cold water. This rinses away surface starch, which is what makes chips stick together and turn greasy. Leave them to soak for at least 30 minutes, or up to a few hours in the fridge if you are planning ahead.

Drain them, then dry them thoroughly on a clean tea towel. Wet chips into hot oil is a recipe for spitting, spattering and a soggy finish. If you have time, pat them dry and leave them on the tea towel for ten minutes while you sort the batter.

The Batter: Cold, Lumpy and Barely Mixed

A proper chip-shop batter is thin, crisp and pale gold, not a thick armour plating. The secret is a loose batter and a very cold liquid. Use roughly 100g of plain flour to 150ml of liquid, with a tablespoon of cornflour for extra crunch and half a teaspoon of baking powder for lift.

For the liquid, cold beer is traditional and gives a lovely flavour and colour. Sparkling water works beautifully too, and a splash of milk will help the batter brown. The colder the better — keep the liquid in the fridge until the moment you mix.

Now here is the bit most people get wrong: do not whisk it smooth. Combine the ingredients with a fork until just incorporated, lumps and all. Overworking the flour develops gluten, and gluten makes tough, chewy batter. Mix it as late as possible, ideally just before the fish goes in.

Season the batter with salt and pepper, and if you fancy it, a pinch of cayenne or a little mustard powder. Leave it to sit for ten minutes — no longer — while you heat the oil.

Oil Temperature Is Everything

If you take one thing from this article, let it be this: buy a thermometer. Frying by eye is guesswork, and guesswork gives you either pale, oily chips or a burnt crust with raw fish inside.

• First chip fry: 130–140°C. Cook the chips in batches for 6–8 minutes until soft but not coloured. They should look pale and slightly floppy.
• Second chip fry: 180–190°C. Back in they go for 2–3 minutes until golden and crisp. This two-stage method is the whole secret to fluffy insides and crunchy outsides.
• Fish: 185–190°C. A steady, hot temperature sets the batter fast so it seals and doesn't drink the oil.

Use a deep, heavy pan and never fill it more than a third full. Rapeseed or sunflower oil works well; a beef dripping blend is even better if you want that proper chip-shop flavour. Never crowd the pan — two pieces of fish at a time, maximum. Crowding drops the temperature and you end up steaming rather than frying.

Preparing and Resting the Fish

Ask your fishmonger for thick, even fillets — cod, haddock, or if you're lucky enough to be near the coast, hake or pollock. Thick fillets cook evenly; thin tail ends will overcook before the batter browns.

Pat the fish completely dry with kitchen paper, then check for bones with your fingertips. Season it lightly, then dust it with plain flour. That thin flour layer is the glue that makes the batter cling instead of sliding off in the pan.

Dip the fillet in the batter, holding it by the tail end. Let the excess drip back into the bowl for a second or two — a thick coating will cook unevenly and taste doughy. Lower it gently into the oil, away from you, tail first, and let go. It should sizzle immediately.

Fry for 6–8 minutes depending on thickness, turning once after about four minutes. Resist prodding it. When it's ready, it will be deep gold and rigid, and the bubbles around it will have slowed right down.

Drain on a wire rack, not on kitchen paper. Paper traps steam underneath and softens the bottom of the batter. A rack lets the air circulate and keeps everything crisp.

Bringing It All Together

Keep your oven on its lowest setting with a baking tray inside while you work in batches. Chips go in first, then the fish, so everything lands on the plate hot at the same time.

Salt generously the moment the food leaves the oil — salt sticks to hot fat and barely at all once things have cooled. Then vinegar, plenty of it, and a wedge of lemon if you like.

Serve with mushy peas, tartare sauce, or simply buttered white bread and a mug of tea. A proper chip-shop tea, made at home, is one of the great British pleasures — and now you know exactly how to get it right.