An air fryer will never hand you the fish and chips you get from a proper chippy, wrapped in paper and steaming through the walk home. What it can do is get a crisp, hot plate on the table on a Tuesday night in under half an hour, without a pan of hot fat on the hob. The catch is that it only works for some combinations. Frozen or fresh, battered or breaded — the results are wildly different, and one of them is a waste of good fish.
Why an air fryer is hard on batter
An air fryer is a small, fierce convection oven. A fan drives hot air around at speed, which is excellent news for anything dry and breaded, because the surface crisps as moisture leaves it. Batter is a different problem.
Traditional fish batter is flour, water and a little raising agent, and it turns crisp and bubbled when it hits hot oil. The oil does two jobs at once: it drives water out fast, and it fries the batter itself. Moving hot air does neither. What you get instead is a coating that sets pale and chalky on top while the fish steams underneath. That steam has nowhere to go, so the base goes gluey. You can patch it — spray the batter generously with oil and cook hot, around 200°C (400°F) — but you are patching a hole, not fixing it.
Frozen fish: breaded beats battered
If you're buying a box from the freezer aisle, the breaded fillets will outperform the battered ones every time.
Frozen battered fish comes out pale, patchy and slightly tacky on the base even with a good spray of oil. The batter was formulated for a fryer, and it knows it. It's also worth reading the box: some cheaper battered portions are formed from minced fish, which turns mushy once the coating dries out. Cook these at 200°C (400°F) for 12–15 minutes, flipping once at halfway, and eat them immediately — they go limp fast.
Frozen breaded fish — panko, coarse crumb or a humble fish finger — is close to the ideal air fryer food. Single layer, no overlapping, 200°C (400°F) for 10–14 minutes depending on thickness, one flip. No oil needed, though a light spray gives a more even colour. Fish fingers and goujons are usually done in 8–10 minutes.
Fresh fish, breaded: the reliable route
This is the version worth learning. Choose a firm white fillet — cod, haddock, pollock, coley — and keep it dry. Pat it thoroughly with kitchen paper. Wet fish means steam, and steam means a coating that slides off in the basket.
- Set out three shallow dishes: seasoned flour, beaten egg, and coarse breadcrumbs. Panko is best. Blitzed stale bread works too, but dry it in a low oven first or it stays soft.
- Dust the fillet in flour, then egg, then press it firmly into the crumbs. Use one hand for the wet stages and one for the dry, or you'll be peeling your fingers apart.
- Spray both sides with oil and leave it to sit for five minutes. This is what turns breadcrumbs golden instead of grey.
- Air fry at 190°C (375°F) for 10–12 minutes for a fillet around 2cm thick, flipping carefully at halfway. Thicker fillets need 14 minutes at a slightly lower temperature.
- Check the thickest part. It should flake and be opaque all the way through — around 63°C/145°F if you use a thermometer.
Use a pump-action sprayer or a mister rather than an aerosol can. Many manufacturers warn that aerosol sprays and their propellants can damage the non-stick basket over time, and a misting bottle gives you better control anyway.
Chips: where most people go wrong
Frozen chips in an air fryer are decent if you treat them properly. The mistake is tipping in a pile and hoping for the best. Air has to move around every surface.
- Fill the basket no more than a third full for a true single layer, or half at most if you're willing to shake often.
- Toss with a teaspoon of oil. Not more, but not none — oil-free frozen chips come out dry and pale.
- Cook at 180°C (360°F) for 20–25 minutes, shaking every 7–8 minutes.
- Salt after cooking, never before. Salt on the surface draws water out and stops the outside crisping.
For fresh chips, cut them, rinse the starch off, then parboil for 5–6 minutes until just tender at the edges. Drain and leave to steam dry in the colander. Toss in a tablespoon of oil with salt and a little paprika, and cook at 200°C (400°F) for 18–22 minutes with regular shakes. They'll beat frozen ones because you control the moisture. Thick-cut wedges work far better than thin fries, which dry out before they crisp.
Don't cook fish and chips together
It's tempting, and it's the quickest way to ruin both. The fish releases moisture, and any coating that flakes off lands on the chips, which absorb it and go soft. Even in a two-drawer machine, the timings rarely line up.
Cook the chips first. Hold them in a low oven at around 100°C (200°F) on a tray, with the door slightly ajar so they don't steam themselves soggy — or simply let them rest for ten minutes while the fish cooks. They're better for it. Wipe out the drawer between batches if there's any residue.
Starting settings worth trying
- Frozen breaded fish: 200°C / 400°F, 10–14 min, flip once.
- Frozen battered fish: 200°C / 400°F, 12–15 min, spray generously, flip once.
- Fresh breaded fillet, 2cm thick: 190°C / 375°F, 10–12 min, flip once.
- Frozen chips: 180°C / 360°F, 20–25 min, shake every 8 min.
- Fresh chunky chips: 200°C / 400°F, 18–22 min, shake often.
Every machine runs differently, and some are effectively 20°C hotter than the dial suggests. Keep notes for the first few cooks, then trust your own numbers over any list, including this one.
What simply doesn't work
Fresh battered fish is the big one. No setting fixes a wet batter sitting in a basket of moving air. If you want that, fry it properly and use the air fryer to reheat it — three or four minutes at 180°C (360°F) brings back a surprising amount of crunch.
Also poor: cooking from frozen in a heap, using paper liners without holes (they block airflow and leave the underside pale), stacking fillets so they touch, and blasting thin delicate fish such as plaice at high heat for too long. Overloading is the single most common cause of disappointing results, and it's the easiest one to fix.
Is it worth it?
Yes, as long as you go in knowing what you're getting. Frozen breaded fish with well-managed chips lands you a quick weeknight dinner that beats the oven on time and beats a takeaway on how you feel afterwards. And a fresh breaded fillet cooked hard and fast is genuinely good — crisp shell, flaking fish, and you can taste what you're eating.
It won't match a chippy. Nothing that avoids a bath of hot oil will. But as a trade for twenty minutes and a quick wipe of the drawer, it's a fair one.
Photo: Max Vakhtbovych / Pexels
