Beer-Battered Fish and Chips (Cod)

Method

1. Prepare the chips. Cut the potatoes into 1/2-inch sticks and soak in cold water for 30 minutes. This removes surface starch, which prevents the chips from sticking together and helps them crisp. Drain and pat completely dry — wet potatoes in hot oil splatter dangerously.

2. First fry the chips at 300°F for 5–6 minutes until cooked through but pale — no color. They should be soft and floppy. Remove to a wire rack. This par-cooking step gelatinizes the starch inside the potato, creating the fluffy interior. Let them cool for at least 10 minutes before the second fry.

3. Make the beer batter while the chips cool. Whisk together the flour, cornstarch, baking powder, and salt. Pour in the cold beer and whisk until just combined — lumps are fine. Don't overmix. The batter should be the consistency of heavy cream. Keep it cold — set the bowl over ice if your kitchen is warm.

4. Season the fish with salt and white pepper. Dredge each piece in flour, shaking off the excess. The flour creates a dry surface that the wet batter grips — without it, the batter slides off during frying.

5. Heat the oil to 375°F for the fish. Dip each floured piece into the beer batter, letting the excess drip off for 3 seconds. Carefully lower into the oil. Fry for 5–6 minutes, turning once, until deep golden brown and the fish is cooked through. The batter should be puffy, crispy, and audibly crunchy when you tap it.

6. Second fry the chips at 375°F for 3–4 minutes until golden brown and crispy. They should be significantly darker than the first fry. Remove to a wire rack and season immediately with flaky sea salt while the oil is still hot.

7. Serve immediately — fish and chips wait for no one. Pile the chips next to the fish with malt vinegar, tartar sauce, and lemon wedges. The batter should shatter when you bite through it, revealing steaming, flaky fish inside.

Equipment

• Dutch oven or deep fryer Recommended: Lodge 6-Quart Enameled Cast Iron Dutch Oven · Also good: Lodge 6-Quart Enameled Cast Iron Dutch Oven
• Instant-read thermometer (for oil temperature) Recommended: ThermoWorks ThermoPop 2
• Wire rack set over a rimmed sheet pan Recommended: Nordic Ware Natural Aluminum Half Sheet Pan
• Spider strainer or slotted spoon
• Large mixing bowl Recommended: Vollrath 13-Quart Stainless Steel Mixing Bowl

Chef Notes

• The most important thing: The beer must be ice-cold. Cold batter hitting hot oil creates maximum steam, which puffs the batter into a light, crispy shell. Warm batter absorbs oil and turns heavy and greasy.
• Double-fry the chips. First fry at 300°F to cook through (soft and pale), then fry again at 375°F to crisp (golden and crunchy). This two-stage method is the secret to chips that are fluffy inside and shatteringly crispy outside.
• Cornstarch in the batter is the crunch secret. It creates a lighter, crispier coating than all-flour batter. The ratio of flour to cornstarch matters — don't substitute.
• Don't overcrowd the fryer. Each piece of fish needs space for the oil to circulate. Fry 2 pieces at a time maximum.
• Cod is traditional. Haddock is slightly sweeter. Pollock is the budget option. All work — the batter is the star.

Common Substitutions

Ingredient	Substitution	Notes
Cod	Haddock, pollock, or halibut	Any firm white fish. Avoid thin fillets — they overcook
Lager beer	Sparkling water or club soda	For alcohol-free version. Same carbonation effect, less flavor
Deep frying	Air fryer at 400°F	Spray battered fish with oil. Less crispy but significantly less oil
Russet potatoes	Yukon Gold	Creamier interior, less starchy exterior. Still good
Malt vinegar	White wine vinegar or lemon juice	Malt vinegar is traditional and has a unique sweetness

What You're Practicing

Beer-battered fish and chips teaches you two essential frying techniques: batter-frying (coating protein in a carbonated batter for maximum puff) and double-frying (par-cooking at low temp, crisping at high temp). The carbonation in the beer creates tiny bubbles in the batter that expand in hot oil, producing an impossibly light, crispy shell. Visit Techniques for more on frying science.

The double-fry method for chips is the same technique used by every great French fry — from McDonald's to Belgian frites. The first fry cooks the interior; the second fry crisps the exterior. Understanding this two-stage approach transforms your frying from amateur to professional. Explore more at Techniques.