Our pick
Cosori 5.5L air fryer
Why we picked it
- A roomy single basket that suits two portions in one go
- Simple to use, so it’s easy to learn what works
- Sensible price for the size
Worth knowing
- Cooking for four or more? You’ll be cooking in batches
- Food still needs shaking or turning for even browning
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An air fryer is, in effect, a small, fast fan oven. That’s both why it’s good and why it has limits. It’s brilliant at food that wants dry, circulating heat and a crisp finish. It’s poor at anything wet, light, or too big to fit in a single layer.
Most disappointments come from putting the wrong food in, not from the machine. Here’s how to tell the difference before you load the basket.
A three-question test
- Does it want a crisp, browned outside? Chips, wings and roast veg do. Soup doesn’t.
- Will it sit still in a single layer? Heavy pieces do. Loose leaves and light crumbs get blown around.
- Can it cook without liquid? If it needs to simmer or soak, it belongs on the hob.
If the answer to all three is yes, it’s very likely a good air fryer food.

What works well
| Food | Why it works |
|---|---|
| Frozen chips, wedges, hash browns | The fan crisps the outside quickly, and you need little or no extra oil |
| Chicken thighs, drumsticks and wings | Skin crisps as the fat renders, and the pieces are heavy enough to stay put |
| Sausages and bacon | They cook in their own fat, which drips below the basket |
| Fish fingers and breaded fillets | The coating crisps without frying |
| Roast vegetables (peppers, courgette, broccoli, sweet potato) | Dry heat browns the edges, and a light coat of oil does the rest |
| Reheating pizza, pastries and roast potatoes | Crisps leftovers that a microwave would leave soft |

What works, with care
| Food | What to watch |
|---|---|
| A whole chicken | It must fit with room for air, and it needs to be cooked all the way through, so check the thickest part |
| Cakes, muffins and bakes | Use a small tin and a lower temperature, check early, and cover the top if it browns first |
| Burgers | Fine, but expect fat to drip. Cook them through and don’t overfill |
| Anything with a breadcrumb coating | Press the crumbs on firmly and spray lightly with oil, or loose crumbs blow around |
| Cheese on top of food | Light toppings can blow off. A heavier or pressed-on layer stays put |
| Leafy greens such as kale | They crisp fast and can burn, so keep the portion small and watch it |
What to leave out
| Food | Why |
|---|---|
| Wet batter | It drips through the basket before it sets, leaving mess instead of a coating |
| Soups, stews, sauces | They need a pot. The basket can’t hold liquid |
| Rice and pasta from dry | They need water to cook |
| Large joints that don’t fit in a single layer | They crowd the air and cook unevenly. The oven copes better |
| A packed basket of anything | Food steams instead of crisping. Cook in two batches |
Cooking a whole meal in one go
The trick with a single basket is order. Start the food that takes longest, then add faster items part way through. Chicken thighs go in first, wedges join them later, and quick vegetables go in for the last few minutes. Rest the meat under foil while the sides finish. Times vary between models, so treat any figure as a starting point and check your manual. Our guide to converting oven recipes gives starting times for common foods.
Foods people ask about
| Food | Verdict | Note |
|---|---|---|
| Toast and garlic bread | Works | Browns fast, so watch it |
| Jacket potatoes | Works | Pierce the skin. They take longer than chips |
| Frozen vegetables | Works | Cook from frozen and shake the basket |
| Halloumi | Works | Slice it and brush with a little oil |
| Whole eggs in the shell | Check your manual | Guidance varies between models |
| Popcorn | Check your manual | Some makers advise against it |
Cook it through
Air fryers brown the outside quickly, so food can look done before the middle is. Meat and poultry should be steaming hot all the way through, with no pink and clear juices, which is the standard UK food safety advice. Check the thickest part, and use a thermometer for chicken legs and joints.
Habits that help
- Pat food dry with kitchen roll before it goes in. Surface water slows crisping.
- Use a light coat of oil, ideally brushed or sprayed on, rather than a pour.
- Spread food in a single layer, and shake or turn it halfway through.
- Check the manual before using foil or liners. We cover what’s actually safe in an air fryer separately.
For tweaking an oven recipe, read converting oven recipes for the air fryer. To work out whether it saves you money, see air fryer vs oven running costs.
Useful extras
The check
OXO Good Grips instant-read thermometer
Good for: confirming chicken and burgers are cooked through, which colour alone can’t tell you.
Not ideal if: you mostly cook chips and vegetables.
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Keeping the basket clean
Reusable perforated air fryer liners (2 pack)
Good for: saving the basket from scrubbing while the holes let air through.
Not ideal if: you’re happy washing the basket each time.
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Air fryer: common questions
Can I cook frozen food straight from the freezer?
Many foods made for the oven can go in frozen. Follow the packet instructions, and make sure the food is steaming hot all the way through.
Why is my food not crispy?
Usually the basket is too full, the food is wet, or there isn’t enough hot air moving around it. Dry the food, spread it out, and cook in batches.



