*This is a repeat of a programme that first aired on 22nd February 2018

Blockchain technology has been heralded as the answer to a safer, fairer and more transparent food system. Many companies, from global food giants to start-ups, have begun to experiment with it. But can blockchain really disrupt the global food industry or is it just a gimmick? Emily Thomas meets some pioneers of this new technology, who explain why they think it will change the way we eat.

(Picture: Light from broken egg, Credit: Getty Images)