Peggy Cherng: Engineering a fast-food fortune

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.

Good Bad Billionaire is the podcast that explores the lives of the super-rich and famous, tracking their wealth, philanthropy, business ethics, and success. There are leaders who made their money in Silicon Valley, on Wall Street and in high street fashion. From iconic celebrities and CEOs to titans of technology, the podcast unravels tales of fortune, power, economics, ambition and moral responsibility. Simon and Zing put their subjects to the test with a playful, totally unscientific scorecard — then hand the verdict over to you: are they good, bad, or simply billionaires? Here's how to contact the team: email goodbadbillionaire@bbc.com or send a text or WhatsApp to +1 (917) 686-1176. Find out more about the show and read our privacy notice at www.bbcworldservice.com/goodbadbillionaire