Season 10 - Episode Guide

Jimmy Doherty, Kate Quilton and Matt Tebbutt travel the globe to uncover more unusual, intriguing and surprising secrets behind the food we eat. Kate's down under, on the trail of one of the most exotic meats going: crocodile. It's started popping up on our supermarket shelves, but how on earth do you farm such a dangerous animal? Kate undertakes a terrifying task in Darwin in Northern Australia: collecting freshly laid crocodile eggs from under their mother's nose. Meanwhile: cod liver oil; rather than using cod, could you make oil from salmon or haddock livers for example? Jimmy's search for the answer takes him first to Grimsby, where he picks his way through tonnes of fish guts, before a trip to Iceland makes everything clear. And bagels' ingredients are virtually the same as bread, so how come they taste so different? Matt wants to visit New York, the spiritual home of the bagel, to find out, but instead finds himself in Rotherham, inside the largest bagel factory in Europe.

Jimmy Doherty, Kate Quilton and Matt Tebbutt uncover more unusual, intriguing and surprising secrets behind the food we eat. What makes some tea more expensive than other tea? At one of Kenya's largest tea plantations, Jimmy discovers that tea comes in multiple grades and flavours, and every batch can be subtly different. So how can the big tea bag manufacturers produce a brew that tastes the same each time? To find out, Jimmy meets a man whose taste buds are insured for one million pounds, in the inner sanctum of one of the UK's largest tea producers. Kate keeps seeing rosemary listed as an unlikely ingredient in hundreds of different products, from chocolate chip cookies to ice cream, so how come none of them has a hint of rosemary flavour?

Kate investigates eucalyptus. It's found in throat lozenges and chewing gum, but what exactly is it, where does it come from, and why is it so good at clearing the airwaves? In Australia, Kate meets one of the world's cutest animals: the koala, raised from birth on a diet of eucalyptus. Kate finds out that eucalyptus is highly toxic, but a local farmer shows her the clever way it's made safe for human consumption. Jimmy's puzzling over pickles. Most pickled goods contain vinegar, but pickled cabbage - or sauerkraut - has no vinegar at all, despite tasting decidedly vinegary. So what's going on? To find out, Jimmy visits a very chilly Poland, the home of sauerkraut, before learning about a remarkable new use for sauerkraut juice in a French power station.

Kate visits Rome to find out what the difference is between gelato and ice cream. Are dark rum and white rum made with different ingredients? Why do mints make your mouth cold?

What are those worms doing in bottles of tequila? How do you stop carp tasting of mud? And what's the difference between tangerines, mandarins, satsumas and clementines?

Jimmy, Kate and Matt present some of their favourite investigations. Do prunes help you stay regular? Why are there holes in Swiss cheese? Plus, black pepper.

Jimmy, Kate and Matt present some of their favourite investigations, including a ground-breaking use for an enzyme found in pineapples. Plus vitamin D, and elderflower cordial.

Jimmy, Kate and Matt present favourite investigations. Is MSG as unhealthy as some headlines claim? Why do onions make you cry? Why are there closed pistachio nuts in our packs?