Fish and Chips Recipe: Crispy Beer Batter, Stays Crispy
To make fish and chips, dip cod fillets in a cold beer batter and fry at 375°F until golden and crispy, about 4-5 minutes per batch. Fry thick-cut potatoes twice —? once at 325°F to cook through, then at 375°F to crisp —? and season immediately with salt.
I went to London for a week and ate fish and chips twice, the second time specifically to study it because the first time I had eaten it too fast to notice what was happening. The batter was light and shatteringly crisp in a way that I'd never achieved at home — not thick and greasy, but thin, airy, and audibly crunchy all the way through the meal rather than just for the first thirty seconds.
I came home and tried to make it and the batter turned out dense and pale and went limp within minutes of leaving the oil. I made it again and the same thing happened. The third time I figured out two things that had been working against me: the batter needs to be cold going into the oil, not room temperature, and the oil needs to be hot enough to immediately set the batter rather than letting it sit and absorb fat.
Beer batter works because the carbonation creates bubbles as it hits the hot oil, which makes the coating puff and turn light rather than thick. Keep the batter cold in the refrigerator while the oil heats — the temperature contrast between cold batter and hot oil is what produces the crisp. The fish should be dry before it goes into the batter, otherwise the moisture steams the coating from the inside and you're back to limp fish.
The chips are a whole separate project with their own rules. Double-frying is not optional if you want them to stay crispy. First fry to cook through, rest, then second fry at a higher temperature to finish the crust. It takes longer. It is worth it.
Ingredients
- 1 ½ lbs cod fillets (or haddock), cut into 4-6 oz portions
- 2 lbs russet potatoes, peeled and cut into ½-inch thick strips
- 1 ½ cups all-purpose flour, divided
- 1 teaspoon baking powder
- 1 teaspoon fine sea salt, plus more for seasoning
- ½ teaspoon black pepper
- ½ teaspoon garlic powder
- 1 cup cold lager beer (or cold sparkling water)
- 1 large egg
- Vegetable oil or peanut oil, for frying (about 2 quarts)
- Malt vinegar and tartar sauce, for serving
- Lemon wedges, for serving
Instructions
- 1Peel and cut potatoes into ½-inch thick strips. Rinse under cold water until the water runs clear, then pat completely dry with paper towels. Dry potatoes are not optional —? wet potatoes in hot oil will introduce you to a situation you were not prepared for.
- 2Pour oil into a large heavy-bottomed pot or Dutch oven to a depth of 3-4 inches. Heat to 325°F over medium-high heat, using a deep-fry thermometer to monitor temperature.
- 3Working in batches, fry the potatoes at 325°F for 5-6 minutes until just cooked through but not yet golden. They should be soft and pale. Remove with a slotted spoon and drain on a wire rack or paper towels. Let rest for at least 10 minutes. (This is the first fry —? do not rush to the second.)
- 4While the chips rest, make the batter. In a large bowl, whisk together 1 cup flour, baking powder, salt, pepper, and garlic powder. Add the cold beer and egg and whisk until just combined —? a few small lumps are fine. Do not overmix. Place the batter bowl in the refrigerator until ready to use; cold batter is the whole game.
- 5Put the remaining ½ cup flour in a shallow dish. Pat the fish fillets completely dry with paper towels and season lightly with salt and pepper. Dredge each fillet in the plain flour, shaking off the excess.
- 6Raise the oil temperature to 375°F. Working in batches of 2 fillets at a time, pull the batter from the refrigerator, dip each floured fillet into the beer batter, let the excess drip off, then lower carefully into the hot oil. Fry for 4-5 minutes, turning once halfway through, until deep golden brown and cooked through. Internal temperature should reach 145°F. Remove and drain on a wire rack. Do not pile fillets on top of each other or they will steam and lose their crunch.
- 7While the fish rests, return the oil to 375°F. Fry the par-cooked chips in batches for 3-4 minutes until deeply golden and crispy. Remove immediately, drain on the wire rack, and season generously with salt right away —? salt sticks when the chips are hot and doesn't stick nearly as well when they've cooled, which is a metaphor for something but mostly it's just a cooking tip.
- 8Serve immediately with malt vinegar, tartar sauce, and lemon wedges.
Pro Tips
- Cold batter is mandatory, not suggested. The temperature contrast between cold batter and hot oil is what creates the rapid steam that makes the coating puff and crisp. Warm batter produces a dense, greasy coating that slides off and makes you feel personally attacked.
- Dry your fish and your potatoes like you mean it. Surface moisture is the enemy of crunch. Paper towels, press firmly, be thorough. This step takes thirty seconds and saves the whole dish.
- Fry in small batches. Adding too much cold food drops the oil temperature, and once the oil temperature drops, you're not frying anymore —? you're just slowly soaking things in warm fat. Neither of you deserves that.
Substitutions
Storage Instructions
Fish and chips are best eaten immediately. If you must store leftovers, keep fish and chips separately in airtight containers in the refrigerator for up to 2 days. Reheat on a wire rack on a baking sheet in a 400°F oven for 10-12 minutes —? this restores most of the crunch. Do not microwave them. I'm not telling you what to do, but I am telling you what to do.
Make Ahead
The chips can be first-fried (325°F par-cook stage) up to 4 hours ahead and held at room temperature. Complete the second fry just before serving. The batter can be made up to 1 hour ahead and kept refrigerated —? cold batter holds well. Do not batter the fish ahead of time.
Frequently Asked Questions
What makes beer batter fish and chips extra crispy?
Three things: cold batter, hot oil at 375°F, and completely dry fish. The cold batter hitting hot oil creates rapid steam expansion that makes the coating puff and crisp rather than going dense and greasy. Baking powder in the batter adds extra lift. If your coating came out soft, one of those three conditions wasn't met —? usually the oil temperature dropped from adding too much food at once.
What's the best fish to use for homemade fish and chips?
Cod is the classic choice —? mild flavor, thick flaky flesh, holds up beautifully in hot oil. Haddock is equally traditional and arguably more common in Northern England and Scotland. Both are excellent. Pollock is a good budget substitute. Avoid thin, delicate fish like flounder or sole —? they cook too fast and can fall apart before the batter finishes crisping.
Why did my batter fall off the fish during frying?
Almost always because the fish wasn't dry enough or wasn't dredged in plain flour first. The plain flour dredge creates a dry, slightly rough surface that the wet batter can actually grip. Skipping that step is the number one reason batter slides off. Also make sure your oil is at the full 375°F before adding fish —? too-cool oil lets batter sit and loosen rather than immediately setting.
Why do you fry the chips twice?
The first fry at 325°F cooks the potato through without browning, so the inside gets fluffy. The second fry at 375°F crisps the outside into a proper golden shell. Single-frying chips at high heat browns the outside before the inside is cooked through, leaving a dense, slightly raw center. The rest period between fries lets steam escape from the potato, which also helps the second fry produce better crunch.
Can I make fish and chips without beer?
Yes. Cold sparkling water or club soda works as a direct substitute —? the carbonation is what aerates the batter, and beer's flavor contribution is mild enough that most people can't tell the difference in the finished product. Use the same amount, keep it cold, and proceed exactly as written. This also makes the recipe suitable for anyone avoiding alcohol.
How do I reheat leftover fish and chips?
The oven is your only real option if you want any crunch to survive. Place the fish and chips in a single layer on a wire rack set over a baking sheet and reheat at 400°F for 10-12 minutes. The wire rack lets air circulate underneath so the bottoms don't steam. The microwave will make the fish soft and the chips flaccid, and you will be disappointed in yourself.
Can I make a gluten-free fish and chips?
Yes. Substitute a 1:1 gluten-free all-purpose flour blend for the regular flour in both the dredge and the batter. Rice flour is also an excellent option and produces an exceptionally light, crispy coating —? some British chip shops use it on purpose. Use gluten-free beer or sparkling water. The technique stays exactly the same; the results are genuinely good.
What oil temperature should I use and why does it matter so much?
375°F for frying fish and the second chip fry; 325°F for the first chip fry. Temperature is the hinge point of this entire recipe. Too low and the food absorbs oil and goes greasy before browning. Too high and the batter burns before the fish cooks through. A clip-on deep-fry thermometer costs about ten dollars and eliminates the guesswork entirely. It is the most useful piece of equipment in this recipe.