Food Unwrapped - Season 20

Matt Tebbutt visits Argentina to learn the secret of perfect popcorn, Andi Oliver looks at how the mould gets put inside blue cheese, and Jimmy Doherty is in Germany to see how electricity is used in cutting edge crisp production.

Amanda Byram learns if there's anything Scottish at all about scotch eggs, and Matt Tebbutt heads for Argentina to find out what the red liquid in a supermarket steak is if not blood. Kate Quilton reports on the dangers of feeding honey to young children.

What's the healthiest lettuce in the salad bag? Is sea salt all it's cracked up to be? And in Suffolk, Briony May Williams explores the difference between light and dark ales.