Self-confessed crisp lover Ruth Alexander traces the story of the crisp or potato chip, starting with a tasting experience matching fine wines and “rubbish crisps” at a wine bar in the northern English city of Manchester.

With the help of journalist and crisp historian Natalie Whittle, Ruth finds out about the commercial beginnings of the potato chip in the fine dining rooms of nineteenth century New York. She meets the chef who travels the world searching for new taste sensations to develop into a packet of crisps for snack giant Frito-Lays. Can you guess which flavours nearly, but not quite, made it onto the shelves?

Ruth also talks to salty snack expert Jolene Ng of Mintel, who researches the role crisps play in modern life. And with Japan renowned for its unusual flavours, Ruth meets Makoto Ehara, the boss of one of the country’s biggest potato chip makers Calbee, who tells her about the threat climate change poses to the future of the potato chip industry.

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

Produced by Lexy O’Connor

Photo: A woman in a bright pink jumper is smiling as she pushes a supermarket trolley through the potato crisp aisle. Credit: dowell / getty images

How a professional sailing league built massive reach on YouTube and social media