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Potatoes are having a moment.

Once dismissed as dull, stodgy or even unhealthy, they鈥檙e now back, appearing on restaurant menus, in food magazines and across social media feeds.

But the story of the potato goes back much further.

In this episode, Ruth Alexander traces the journey of one of the world鈥檚 most familiar foods. From its origins millions of years ago to its place in today鈥檚 global food system.

At the Natural History Museum, botanist Sandy Knapp explains how the potato may have been born from a chance encounter between two wild plants in the Andes, an event that made it possible for potatoes to grow underground and spread across new environments.

We explore how the potato became a global food. Potatoes USA president Blair Richardson explains how demand continues to grow worldwide, and how the industry is working to reshape the potato鈥檚 image.

We ask whether the potato鈥檚 reputation is deserved. Nutrition scientist Candida Rebello shares research suggesting potatoes may be far more beneficial, and more misunderstood, than many people think.

And at the International Potato Center in Peru, scientist Julian Soto works with farmers to conserve thousands of native potato varieties. In the Andes, potatoes are not just a crop, they are part of culture, identity and family life.

From ancient origins to modern revival, this is the story of how the potato conquered the world, fell out of favour, and is now being rediscovered, just as new challenges begin to emerge.

If you鈥檇 like to get in touch with the programme, please email: thefoodchain@bbc.co.uk

Producer: Izzy Greenfield
Sound engineer: Hal Haines
Picture: Getty

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