The £17 book that turned 2,847 forgotten British air fryers into the most-used appliance in the house.

It isn't the air fryer. It's the instructions.

You bought the thing because a friend wouldn't shut up about it. Crispy chips without the oil. A proper roast on a school night. Half the energy bill of the oven.

Then reality. Chicken pink in the middle. Chips that arrive limp and apologetic. A basket you open with the same quiet dread as a fridge you haven't cleaned since Easter.

Here's the honest bit: every air fryer runs a little hot, a little cool, a little loud. The recipes floating about online were written for someone else's basket, someone else's wattage, and — if we're being blunt — someone else's supermarket.

The Ninja Foodi Dual doesn't cook like the Tower T17021. Fahrenheit isn't Celsius. A "medium onion" in Ohio is not a "medium onion" from the Sainsbury's Wednesday shop.

So the air fryer ends up back on the counter, cooking the same three things. Chips. Chicken goujons. Reheated pizza on a Friday.

That's not a you problem. That's a translation problem.

↓ Here's how a former private chef in the Cotswolds solved it in her own kitchen.

Eight recipes that show what the method actually does.

The book has 365. Here are the ones that end up on British tables most Sundays, most Wednesdays, most birthdays.

2,847 British households. One quietly changed weeknight.

The book, plus four quiet bonuses. Given, not sold.

Small things that make a big difference on a Tuesday night, yours the moment you download the book.

Everything, for the price of a takeaway you'd rather not order again.

Everything you'd politely like to ask before ordering.

Is this a digital book or a physical one?

Digital. A properly designed PDF that reads like a hardcover — chapter tabs, index, printable recipe cards. Arrives in your email within 60 seconds of ordering. Read it on any phone, tablet or laptop. Print the pages you actually cook from. Costs a fraction of the retail price precisely because it isn't wrapped in cardboard and shipped in a van.

Which air fryer models does it work with?

Every basket-style air fryer sold in the UK. Timings were tested on a Ninja Foodi Dual, a Tower T17021, a Cosori Pro II and a Salter EK4562. If you own one of those exactly, timings are to the second. Every other model uses one of those as its baseline — the book tells you which one to follow.

Are the ingredients easy to find in Britain?

Every ingredient in the book was sourced within a fortnight from Tesco, Sainsbury's, Aldi, Lidl, Waitrose or the local butcher. No 'coconut aminos', no 'Meyer lemons', no ingredient that requires a special trip. If your local shop stocks it, it's in the book.

Is £17 really a one-off payment?

Yes. One-off. No subscription, no membership, no auto-renew, no monthly anything. You pay once, download once, cook forever. Free updates as Catherine adds new recipes, no upgrade fees.

What if I don't cook much?

Fair question. The book is written for people who don't want to cook much — that's rather the point. The 15-Minute Weeknight Menu bonus is the section people who 'don't cook' cook from. If it doesn't change that, the refund is honest and quick.

How does the refund actually work?

One email to help@airflowperfect.co.uk within thirty days. No form. Refund lands on the card you paid with, usually within 24 working hours, always within three working days. You keep the book. We keep the tea warm for the next question.