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

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