Last reviewed on 12 September 2026.
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But a gadget cannot change what food is made of. This page explains how an air fryer works, how much oil and energy it genuinely saves, what acrylamide is and how to limit it, whether non-stick baskets are safe, and which Indian foods are worth cooking in one.
How does an air fryer actually work?
An air fryer is a compact convection oven. A heating element sits above the food, and a powerful fan drives hot air, usually at up to about 200°C, around a perforated basket at high speed. The moving air strips moisture from the surface of the food quickly, and the dried surface browns and crisps through the same reactions that colour a paratha on a tawa. A thin film of oil helps that crust form and carries flavour, but the food is never sitting in oil. That is the whole trick, and it is why the results resemble frying more than baking.
Is air-fried food healthier than deep-fried food?
Yes, in the ways that matter most for everyday eating: less fat and fewer calories. When food is deep-fried, water escapes from its surface and oil moves in to take its place, especially as it cools after leaving the kadhai. Battered and crumbed foods, pakoras and thin potato chips take up the most. Laboratory comparisons of potato chips cooked both ways generally report far lower fat in the air-fried versions. Less fried food also means less repeatedly heated oil, which degrades each time a kadhai of oil is reused.
How much oil does an air fryer save?
Most of it. A typical air fryer recipe needs a teaspoon or two of oil, roughly 5 to 10 ml, brushed or tossed over the food. Each teaspoon carries about 40 to 45 kcal, and each tablespoon about 120. Deep-fried snacks, by contrast, can absorb a substantial amount of oil, with the exact figure varying by food, batter, oil temperature and how long the pieces drain. Which oil to use for that teaspoon is a separate question, discussed in which cooking oil is best in India. The saving only counts if the air fryer replaces frying, not if it adds extra snacks.
Does an air fryer cause acrylamide?
It can, just as ovens, toasters and kadhais can. Acrylamide forms when starchy foods such as potatoes, bread and cereal snacks are cooked hot and dry, above roughly 120°C, through a reaction between an amino acid called asparagine and natural sugars. The International Agency for Research on Cancer classifies acrylamide as probably carcinogenic to humans, largely on the basis of animal studies. Some laboratory comparisons have found less acrylamide in air-fried chips than deep-fried ones, and others have found little advantage. The colour you cook the food to matters more than the appliance you cook it in.
How can you reduce acrylamide when air-frying potatoes?
Cook starchy food to a golden yellow rather than dark brown, which is the core of the UK Food Standards Agency's Go for Gold advice. Soaking cut potatoes in water for 15 to 30 minutes, then drying them well, washes away some of the surface sugars that feed the reaction. Do not add extra time for a darker crust, and discard pieces that have scorched at the edges. Slightly lower temperatures for a little longer tend to brown more evenly. Toast and bread follow the same rule: pale gold is the target.
Air-frying potatoes to gold rather than brown
The colour you cook starchy food to matters more than the appliance you cook it in.
Soak the cut potato
Fifteen to 30 minutes in water washes away some of the surface sugars that feed the reaction.
Dry it properly
Water left on the pieces steams rather than crisps, and tempts you into adding time at the end.
Run it slightly cooler for slightly longer
A lower temperature over more time browns more evenly than a hot, short blast does.
Stop at golden yellow
This is the whole of the Food Standards Agency's Go for Gold advice, and it applies to toast and bread as much as to chips.
Throw away the scorched pieces
Edges that have gone dark at the corners of the basket are the ones worth losing rather than eating.
Are non-stick air fryer baskets safe?
Yes, when the coating is intact and the fryer is used as intended. Most baskets are coated with PTFE, which is stable at normal cooking temperatures, and most home air fryers top out around 200°C, below the range at which such coatings start to break down. Problems come from misuse: running the fryer empty for long periods at maximum heat, scraping the basket with metal tongs, or scrubbing it with steel wool. Use wooden or silicone tools, and replace a basket once the coating starts to peel. Stainless steel, ceramic and glass inserts are available for those who prefer to avoid coatings.
How many calories does an air fryer save on a samosa?
A meaningful share, but less than people hope. A samosa's fat comes from two places: the ghee or oil rubbed into the dough, called moyan, and the oil it absorbs in the kadhai. Air frying removes most of the second and none of the first. The filling is still potato, and the pastry is still maida. So an air-fried samosa has fewer calories than a deep-fried one of the same size, but it is not a low-calorie snack. The samosa recipe shows where the dough fat and filling come from, and adjusting those is where the remaining savings lie.
Does air-frying make fried snacks healthy?
No. An air-fried samosa is still a samosa: refined pastry around a starchy filling, with little protein or fibre. The same goes for air-fried bhature, kachori and packaged frozen snacks. Many frozen chips and nuggets are par-fried at the factory before they are frozen, so they bring oil with them into the basket. The air fryer makes these foods less fatty, which is worth something, but it also makes them easier to eat more often. If the gadget turns a weekly treat into a daily one, the household ends up eating more calories than before.
Which Indian foods are best cooked in an air fryer?
Foods that are already sound choices and simply benefit from a crisp finish: paneer tikka, fish, vegetables, aloo tikki, and roasted chana or makhana. Marinated paneer tikka chars nicely in 10 to 12 minutes without a tandoor. Fish pieces rubbed with spices cook quickly and stay moist. Cauliflower, bhindi, baingan slices, capsicum and mushrooms roast with a teaspoon of oil. An aloo tikki crisps on the outside with a brush of oil instead of a shallow pan of it. Keep meat and fish from blackening at the edges, since charring creates compounds best eaten rarely.
Can you roast makhana and chana in an air fryer?
Yes, and it is one of the most useful things an air fryer does. Makhana tossed with a few drops of ghee, salt and spices crisps in a few minutes at around 160 to 180°C, and roasted chana can be refreshed or seasoned the same way. Shake the basket halfway through and watch closely, since both go from toasted to burnt quickly. These make filling snacks for their calories, and the page on low-calorie Indian foods covers others that belong in the same category.
Does an air fryer destroy nutrients?
Not more than other cooking methods, and often less than boiling. Because food cooks quickly without sitting in water, water-soluble vitamins such as vitamin C and some B vitamins are not leached into cooking water that gets thrown away. Heat does reduce some vitamin C in any method, and longer cooking means greater losses. The practical rule is to cook vegetables until just tender with a little bite left, rather than until shrivelled. Overall, air-frying vegetables is a reasonable way to prepare them, particularly for people who find boiled sabzi dull and would otherwise skip it.
Is an air fryer good for people with heart disease or high cholesterol?
It can help, by cutting down on fried food, but it does not change what your doctor or dietitian has asked of you. If you have been told to limit fried and fatty food because of heart disease, raised triglycerides, gallbladder problems or after a gallbladder operation, an air fryer makes it easier to enjoy tikki and fish without the kadhai. Check with your care team before treating air-fried pastry snacks as allowed again, since the pastry and the dough fat remain. The appliance supports the plan; it is not a substitute for one.
Learning to cook healthier without losing flavour
Using an air fryer well is really a small part of a bigger skill: modifying recipes so food stays enjoyable while its nutrition improves. NNWA's Culinary Nutrition (Nutrition Chef) course covers nutrient-retentive cooking, recipe modification, balanced meal design, healthy ingredient swaps, menu planning and food presentation. It runs for six weeks at intermediate level, costs 12,999 rupees, reduced from 18,999, with EMI of 1,083 rupees a month, and carries NNWA certificates.
The honest verdict
An air fryer is a healthier way to cook foods you would otherwise deep-fry, because a teaspoon or two of oil replaces what a kadhai leaves behind. It still produces acrylamide in starchy foods cooked too dark, so aim for golden. Non-stick baskets are safe if you do not overheat them empty or scratch them. Use the fryer for paneer tikka, fish, vegetables, tikki and roasted makhana, and remember that an air-fried samosa is still pastry and potato, best kept as an occasional snack.