Heston's Fantastical Food

Heston celebrates the packed lunch by building a super-sized sandwich with unexpected 'rogue' fillings. There's also the world's biggest crisps and the world's biggest KitKat. Heston fills an entire theme park with nostalgic packed-lunch favourites and invites disillusioned lunchers on a surprise trip. His giant super-sized sandwich is big enough to feed a coachload of hungry adults and features syringes packed with injectable condiments. Heston summons the help of the Hula Hoops factory to create a packet of crisps so large that it's only accessible by ladder. And Heston builds a massive carton of the 80s classic Um Bongo, where adults pop their heads through huge foil circles and experience his tropical jungle scene.

Heston celebrates sweets, the greatest pleasure of childhood, by making his own Willy Wonka-inspired giant sweet shop.

Heston focuses on the ice cream van, a great British tradition that provided the soundtrack to so many childhoods, and the frozen treats every kid dreams of. But this wonderful British institution is in danger of extinction. In the 1970s, around 25,000 ice cream vans were on the roads - these days there are less than 5000. To help kickstart a revival, Heston plans to build the world's biggest ever 99 Flake, over five metres tall and weighing more than a ton, and serve it from the back of his own very special van to the town of Gloucester. He visits Walls and has Europe's biggest ice cream factory at his disposal. To make his chocolate flake, he ropes in the experts behind the Olympic stadium. Heston also turns the classic flavours of Twister, Cornetto, Feast and Calippo into paint balls that can be fired from specially designed cannons.