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Published 17/09/2025

What is an air fryer?

You may have heard the words ‘air fryer’ before, but what is an air fryer exactly? An air fryer is a small kitchen appliance used to cook food by circulating hot air to create a crunchy, crispy exterior while using minimal oil.

Because of this ‘frying’ method, air fryers are fantastic for cooking potatoes (chips, roasties, etc.), chicken, salmon and vegetables. However, people are learning to cook all sorts, with many air frying Yorkshire puddings, chickpeas, tofu and even cakes.

Can you put foil in an air fryer?

Yes, aluminium can be used in an air fryer as long as it doesn’t cover the air fryer’s fan or heating components. This is because air fryers cook via hot air circulation, so always ensure that the foil doesn’t reach the heating elements. The best way to use foil in the air fryer is to line the basket to reduce mess.

ProTip: Always read the manufacturer's instructions and refer to whether they advise against using foil before doing so.

Are air fryers healthy?

Air frying has the potential to make your dishes healthier because it requires less oil when compared to oven roasting and deep frying, while still achieving that crispy outside and tender inside. However, if you’re cooking high saturated foods, then an air fryer won’t make these dishes much healthier.

What can you cook in an air fryer?

Air fryers can cook a variety of foods from fries and jacket potatoes to chicken, sausage rolls, fish and more. You can even bake desserts in an air fryer like brownies, fruit crumbles and cake. Air fryer instructions are usually included in cooking instructions on food packaging nowadays, so always check beforehand. We also have many air fryer recipes for you to gain inspiration from.

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