Thinly slice the potatoes using a mandoline, then tip into a bowl of ice-cold water. Leave to soak for 15 mins.

Tip the potato slices onto a clean tea towel and pat dry thoroughly – they won’t crisp up if they are even slightly wet. Heat the air-fryer to 210C. Drizzle half the oil over half the potato slices, then toss with half the seasoning and a generous amount of salt and pepper.

Tip the potato slices into the air-fryer basket and shake into a single layer. Cook for 12-15 mins, shaking the basket halfway through, until golden and crisp. Repeat with the remaining potatoes, oil and seasoning, then serve with a dip for dunking, if you like.