Are Crunchy Caterpillars the Food of the Future?

Episode Summary

Executive Summary: The episode explores edible insects as a food source through the story of Burkina Faso caterpillar entrepreneur Kahit Yen and expert interviews on nutrition, sustainability, safety, and culture. It shows insect farming can fight malnutrition and create jobs, but only if breeding, feeding, and distribution are made scalable and truly sustainable.

Main Topics: Kahit Yen’s caterpillar business in Burkina Faso (Priority: 5/5): Kahit explains how he built Faso Pro against social skepticism, processing shea caterpillars into packaged food while employing local women and challenging stigma around insect-based entrepreneurship. Insects as nutrition and food security (Priority: 5/5): Experts discuss insects as a traditional, protein-rich food in many regions and a potential answer to malnutrition, especially where micronutrient deficiencies trap communities in poverty. Listener questions on safety, digestibility, and cooking (Priority: 4/5): The programme answers practical questions about which insects are edible, how they are prepared in different cultures, potential digestive issues, and concerns about stings or venom. Environmental potential and limitations (Priority: 5/5): Scientists explain that insects could reduce land use, emissions, and food costs compared with livestock, but only if they replace some meat rather than simply adding more protein to diets. Fieldwork in rural Burkina Faso and seasonal harvesting (Priority: 4/5): The team visits a village where caterpillars are collected in the wild at night, then eaten or sold, showing how insect harvesting supports local diets and seasonal incomes. Research to enable year-round caterpillar farming (Priority: 5/5): Scientists are trying to replicate natural shea-leaf diets with alternative feeds so caterpillars can be bred all year, improving reliability and income for local women.

Key Arguments: Edible insects are already a culturally accepted food in many places and can be a serious source of protein and micronutrients. Not all insects are edible; some contain toxins, so species selection and preparation matter. Insects can be cooked in many ways, but local traditions often use simple frying, salt, onion, or seasoning. Digestibility varies by insect and by the eater; shellfish-allergic people may need to avoid insects. Insects could help the environment only if they replace some meat consumption and are produced with sustainable feed. Current insect farming is not always sustainable because many farmed insects are fed chicken feed, often soy-based and imported. Caterpillar harvesting in Burkina Faso is seasonal, so year-round artificial feed could stabilize supply and income. The business also has a social goal: creating jobs for women and supporting local economies while reducing malnutrition.

Data Points: UN projected global population in 2050: 9 billion - Used to frame the need for new food sources Required increase in food production by 2050: 70% - UN estimate cited in discussion of future food demand Known insect species eaten worldwide: 2,000+ - Antoine Sanon’s response to whether all insects are edible Caterpillar season underground: 9 months - Shea caterpillars spend most of the year underground as pupae Caterpillar emergence window: A couple of months - Short period when caterpillars emerge and are edible Weight of caterpillar inventory in factory room: About 1 ton - Kahit describes stock stored in Faso Pro’s facility Amount Kahit said the business collected in a year: 15 tonnes - Follow-up call reporting business growth Typical box weight: 5 kilos - Kahit shows packaged caterpillars ready for distribution Distance to rural field site from capital: 6 hours’ drive - Charlotte’s fieldwork in Sumosso, west of Ouagadougou

Pivotal Quotes: "A lot of people, when they hear about my business, they start laughing." — Kahit Yen: He describes the stigma and disbelief surrounding his caterpillar business "Insects are a traditional food in many places of the world. They are eaten here in Africa, Asia and in Latin America." — Professor Antoine Sanon: Introduces the cultural and nutritional case for edible insects "A village may not look like people are starving, but if people are getting inadequate levels of micronutrients, that's going to affect them in many, many fairly detrimental ways." — Charlotte Payne: Explains why caterpillars matter for hidden malnutrition and poverty

Implications: Edible insects could improve nutrition, livelihoods, and sustainability, but success depends on overcoming stigma, ensuring safety, and creating truly low-impact production systems that can scale reliably.