Food Unwrapped säsong 12

Kate lifts the lid on the nation's favourite yeast extract, putting Marmite's latest TV advert, which claims that they can predict whether you love it or hate it, to the test.

Jimmy visits Spain to investigate how much orange is in orange squash. In snowy Canada, Matt finds out why maple syrup is so expensive, and Kate reveals the surprising reason why so many of our favourite biscuits have little holes all over them.

In Portugal, Jimmy Doherty learns about the battle against the hidden nuisance that leads to corked wine. In Cyprus, Matt Tebbutt solves the riddle of why cooking okra produces tonnes of slime.

In Scotland, Jimmy finds out how some whisky gets its smoky flavour. In Cyprus, Matt asks why halloumi cheese doesn't melt, and in France Kate visits the world's biggest sweetcorn factory to find out how they get corn off the cob so neatly.

The team investigate why some supermarket food prices have soared this year, and reveal how technology can help us save money, from dynamic pricing to innovative packaging.