In this Christmas special, Jimmy Doherty, Kate Quilton and Matt Tebbutt explore how the food industry brings the taste of Christmas to our tables. Matt's examining the science behind cooking the perfect turkey. His experiments include cooking upside down and even strapping ice packs to the bird, but will any of them deliver? Jimmy's in France, looking into why his chestnuts keep exploding; and Kate's amazed to discover where the pink comes from her pink champagne.