Sheila Dillon digs up the remarkable story of how potatoes changed the world, offer a whole spectrum of flavour, and might shape our food future.

With Sheila are cook and food writer Anna Jones, Charles C. Mann - author of '1493 - How Europe's Discovery of the Americas Revolutionized Trade, Ecology and Life on Earth', and the potato revolutionary and agronomist Alan Wilson.

Presenter: Sheila Dillon