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The Food Chain
The quest for black gold
The Food Chain
Jun 27, 2019

How powerful can a steaming pile of rotting food be?

One third of the world’s food is lost or wasted, greenhouse emissions are warming our planet, and about a third of the world’s soil is degraded. Composting our food waste can help with all of this. But does it make economic sense and does it deserve it’s moniker ‘black gold’?

Emily Thomas meets people in the compost business to ask whether composting at scale will ever turn a profit without government money. And why, if compost is so good for the land, are farmers still so reluctant to use it?

For the compost business to thrive, people need to separate their food waste - but how can they be persuaded to do so? We hear from Seoul in South Korea, where the solution lies in a talking bin, and from Colombo in Sri Lanka, where a failure to address the problem has had devastating consequences.

(Picture: Plants growing in a pile of compost. Credit: Getty Images)

More Episodes

May 27, 2026
The business of food tours

Food tours are becoming one of the fastest-growing parts of the travel industry, with tourists increasingly choosing to explore cities and cultures through what they eat.

In this episode, Ruth Alexander explores the global rise of guided food experiences and the people building businesses around them.

In Manchester, food tour guide Julia Fairburn takes Ruth through some of the city’s best-known food spots, explaining how successful tours combine local history, storytelling and carefully paced eating experiences designed to leave visitors with lasting memories.

Eric Wolf, founder and executive director of the World Food Travel Association in Valencia, Spain, explains how food tourism has expanded worldwide into a multi-billion-dollar industry, as travellers increasingly seek authentic and immersive culinary experiences.

We also hear from Judith von Prockel, who began creating holidays centred around food experiences more than two decades ago, long before culinary tourism became mainstream. She reflects on how attitudes towards food travel have changed and why people are increasingly planning trips around what they want to eat.

And in Malaysia, Pauline Lee from Simply Enak describes the work involved in creating memorable food tours in a growing and increasingly competitive market, where guides must balance logistics, hospitality and cultural storytelling alongside the food itself.

From hidden local gems to global tourism trends, we explore why food tours have become big business — and what travellers are really looking for when they book them.

If you’d like to get in touch with the programme, please email: [email protected]

Producer: Izzy Greenfield Sound engineer: Andy Mills Picture: Simple Enak


26min 28sec



The quest for black gold

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