
Bronwyn Percival
Technical director for Neal's Yard Dairy and co-author of Reinventing the Wheel: Milk, Microbes and the Fight for Real Cheese; discusses cheesemaking microbiology and industry history in the episode.
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Feb 25, 2026 • 38min
From the Milk on the Move podcast: Purity and Danger
Bronwyn Percival, technical director at Neal's Yard Dairy who studies cheesemaking microbes. Heather Paxton, cultural anthropologist exploring raw milk regulation. Deborah Valenze, historian of milk and pasteurization. Bill Oglethorpe, London artisanal cheesemaker. They tour a dairy, probe hygiene and microbial management, trace pasteurization’s cultural history, debate the 60-day rule and show how microbes shape flavor and safety.


