Heat with some movement
An air fryer cooks by moving hot air around food. A heating element supplies heat, while a fan keeps the air circulating. Think of it as a compact fan oven.
The useful idea is convection: heat carried by moving air or another fluid. The air is doing a delivery job.
The basket is the stage
In a basket-style model, the food sits inside the cooking chamber while heated air circulates around it. Philips describes this airflow and direct heat from above as part of how its model cooks and crisps food.
The result can be a crisp outside and a softer middle. Golden potato wedges are a familiar example; they do not need to be submerged in a deep pan of oil.
Why call it frying?
Iowa State University explains that circulating hot air can produce a taste and texture similar to frying while using much less oil. The name describes the effect rather than an oil-filled cooking chamber.
Air fryers come in different shapes, including oven-style models with an air-fry function. The controls and settings vary, even when the basic moving-air idea is shared.
Same kitchen, different tricks
The appliance supplies heat; moving air helps carry it to the food. That small distinction makes an ordinary kitchen gadget more interesting.
For two other kitchen ideas, explore why microwaves turn the plate and how a vacuum flask keeps tea hot.