Oil-free fryers, air fryers, 'air fryers'. They took the market by storm, and more and more users swear by their convenience and results. But what's the trick? What kind of 'magic' do they have inside? How can you 'fry' without oil or fat? The answers come from Alec Watson, the mind behind the fantastic channel Technology Connections. The short version? The concept of the 'oil-free fryer' is a sham, and its technology has been with us for decades.
Hardly a week goes by without seeing an ad for oil-free fryers. The big promise of "healthier french fries" is tempting from every point of view... especially when you plan to sabotage the "health factor" by drowning those fries in ketchup, mustard, or other sauces of questionable caloric value.
However, what's tedious about those ads is that they present the oil-free fryer as something revolutionary, a kind of "product of the future" that can solve all the problems in our kitchen. Fortunately, we have Alec Watson from the Technology Connections channel, who kicked off his 'No Effort November' by sharing the truth about oil-free fryers:
Air fryer: It's an oven
That's right: The mysticism surrounding oil-free fryers is based on a case of false identity. In practice, they are nothing more than miniaturized convection ovens. If we take a quick look at heat transfer methods, convection requires the movement of a fluid (in this case, air), and conventional ovens reproduce this with the help of a high-powered fan inside. The oil-free fryer adopts the same strategy, with the advantage of concentrating all the hot air in a smaller container, which also has a perforated "false bottom" to optimize flow.
Now, that doesn't mean it doesn't work: Going from frozen fries to "ready to eat" in 20 minutes or less is impressive, but the story doesn't end there. Many manufacturers have incorporated "airfryer modes" into their latest models (basically an "all-in-one" in the kitchen), however, ovens must be preheated, require an additional tray, more cooking time, and generally don't produce good results as "fryers" due to different design compromises.
In short, the 'oil-free fryer' is an impostor that does its job well and offers superior ergonomics. What's Alec's final recommendation? If you plan to buy one, keep it basic, with a couple of knobs as controls and nothing else.
