Salmon fillet in an air fryer

What usually goes wrong

Chalky and dry, with white albumin beaded across the surface. Salmon's window is narrow and the appliance is fast; two minutes too long is visible on the plate.

Running the appliance safely

These apply to every food and every air fryer, so they are here once rather than repeated under each state above. They come from Electrical Safety First, from UK product-safety notices and from the manufacturers’ own manuals.

• Plug an air fryer directly into a wall socket. Do not run one from an extension lead.
• An unusual smell, an unusual noise, or scorch marks on the plug mean stop using it and contact the manufacturer.
• Do not overfill. Food touching the heating element is a fire risk, not a cooking problem.
• White smoke from fatty food is usually normal. Black smoke means unplug it immediately.
• Do not leave an air fryer running unattended.
• Leave clear space above and around the appliance, and never cover the air intake or the outlet.

• Aim for a golden yellow colour or lighter on starchy foods such as chips and roast potatoes, rather than a darker brown.
• Buy from a reputable retailer rather than a third-party marketplace seller.
• Clean the drawer, the plate and the element after use. Accumulated grease is what smokes, and then what burns.
• Register the appliance with its manufacturer. It is how a recall reaches you.
• Do not rely on the appliance's own thermal protection. A UK recall was issued because it did not operate.

Each links to its own page, with what it means in practice, what to do if it has already happened, and the source it comes from. Every safety rule AirfryerHQ holds.

Why salmon behaves this way

Salmon's fat keeps the flesh moist across a wider window than lean white fish, but its proteins set within a narrow temperature band and squeeze out moisture sharply once they do — the white albumin that beads on the surface is that happening. Skin crisps readily in moving hot air, better than in a pan, because the air removes moisture from all sides rather than only where it touches metal.

More on salmon

Where to go from here

The pages that answer the questions this one tends to raise.

• Using a thermometer, and where to put itThe times above are for a piece that is not the one you are holding. This measures yours — and it is the single change that fixes most dry salmon fillet.
• How food actually gets crispyWhy patting it dry, spacing it out and a little oil are all the same instruction — so you can apply it when a page runs out.
• Cooking from frozenUsually cooler and longer than the same food fresh, and never worked out from the fresh figure.
• Reheating leftoversA different question governed by a different rule — steaming hot throughout, and only once.
• Why published timings differIf another chart says something else, this is usually why — and which one to believe.
• Do you need to preheat an air fryer?The manufacturers disagree, in writing, in their own manuals. That is the answer, and this page shows you which of them is talking about a machine like yours.
• Why air fryers dry food out, and what to do about itThe mechanism that makes the outside crisp is the mechanism that makes the inside dry. They are not separable, only manageable.
• Single basket or dual zone?Two drawers buy you independence, not capacity. Whether that is worth the worktop depends on whether your problem is quantity or variety.

If it went wrong

The ways salmon fillet specifically tends to fail, each with the fastest thing to check first.

• Food sticks to the basket — Cold surface, no oil, or a coating that has begun to wear — and one of those three is worth acting on quickly.