Peggy Cherng: Engineering a fast-food fortune | Good Bad Billionaire

Peggy Cherng never set out to work in fast food, but her engineering mindset transformed how millions of Americans eat. Journalist Zing Tsjeng and BBC business editor Simon Jack trace Peggy Cherng’s journey: from electrical engineering and simulating battlefields, to co-founding Panda Express with her husband Andrew and becoming a billionaire. By applying data and rigorous standardisation, Peggy Cherng helped turn a single mall food-court experiment into the largest Chinese fast-food chain in the USA, with their orange chicken becoming a cultural staple.