Quick answer: Some air fryers allow carefully placed foil, while others restrict it, so the specific appliance manual comes first.

What to know
Never let loose foil reach the heating element. Do not block all ventilation holes or place empty foil in a preheating basket where airflow could lift it.
Practical context
For acidic foods, foil may react with ingredients such as tomatoes or citrus, so a suitable cooking container can be preferable.
Frequently asked question
Can you line the whole basket?
Blocking airflow can undermine cooking and may create hazards; use only arrangements approved for your model.


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