After being amazed by cereal, folding bicycles, sweets, trainers and baked beans, Gregg Wallace and Cherry Healey return for a festive special of the show that reveals what goes into the creation of the nation’s favourite products.

Gregg rolls up his sleeves at Britain’s biggest cake factory to have a go at making mince pies, a mind-bogglingly rapid process which produces 2,000 pies every minute – and creates mayhem on the production line!

Meanwhile, Cherry looks into what goes into making thousands of miles of tinsel and historian Ruth Goodman investigates the Christmas cracker.