Jimmy Doherty tries to crack the secret recipe of cola manufacturers by attempting to make his own version of the fizzy drink, using such unlikely ingredients as lavender and coriander, as he continues his quest to uncover the secrets lurking in the contents of the supermarket trolley.

Jimmy builds his own production line in order to work out how you turn a humble potato into a hoop-shaped snack you can fit on your finger. He’s also in for a special treat at the world’s biggest ice-cream factory, where he discovers why it is the only frozen food you can eat straight from the freezer.

A visit to the UK’s largest crisp factory is also on tonight’s menu as Jimmy discovers how they make sure every crisp is crunchy.

Jimmy’s Food Factory is simulcast on the BBC HD channel – the BBC’s High Definition channel, available through Freesat, Sky and Virgin Media.