Jimmy Doherty asks: what exactly is in a doner kebab? After going to a kebab manufacturer and helping make a doner, Jimmy is pleasantly surprised by what constitutes a real one. But he soon discovers that a lot of kebab shops in the UK don't know which meat is in the doners they're selling. So, armed with a stack of random kebabs bought from around the country, Jimmy gets a specialist laboratory to carry out DNA tests. He has each sample tested for donkey, horse, lamb, beef, chicken and pork - and the results are varied. Meanwhile, Kate Quilton wants to find out the safest way of eating oysters. After seeing how they're caught she's shocked to discover that 75% of UK-caught oysters contain the sickness bug Norovirus. After seeing British oysters being cleaned for consumption, the team visit Health Protection England to find out the safest way to eat oysters without getting ill. And finally, Matt Tebbutt learns about the amazing ingredient that comes in every bottle of that classic English tipple gin.