In this special episode of Food Unwrapped, the team find out what makes food fit for a celebration! Helen Lawal finds out how tall a celebration cake can possibly get. Jimmy Doherty unravels the secrets of that classic party food: the samosa. He also investigates exactly why there’s so much air in a bag of crisps. Kate Quilton discovers the shape on your celebratory chocolates can change how they taste, gets her hands dirty helping a world champion create a sugarwork showpiece, and finds out what separates cordial from squash. Briony May Williams is stirred, but not shaken, as she learns the secrets to the bags of ice you buy for a party, and how to really mix a martini. Matt Tebbutt dons a lab coat, and finds out the scientific secrets of the ultimate party food.