Jimmy, Kate and Matt present a Christmas special unearthing the secrets behind our festive food. Over 10 million turkeys head for the oven at Christmas. Jimmy investigates the safest way to cook a turkey: can they ever be cooked from frozen, and why do they need to be cooked so carefully? On Christmas Eve it's traditional for children to leave out a snack for Father Christmas and a carrot for his reindeer. But do reindeer actually eat carrots? Kate is off to Lapland to find out, meeting the reindeer being bred to end up on the shop shelves. Do the bubbles in Champagne go to your head and make you feel tipsy sooner than other tipples? Matt has offered to check it out and reveal the serious science behind the bubbly. Kate's also on a mission to find out what's in the suet in your Christmas pud. And Jimmy wants to know why kids hate Brussels sprouts, and if food scientists can come up with a solution.