"Chocolate—ah, glorious chocolate,” says today’s guest Simran Sethi at the start of our interview. In her new book Bread, Wine, Chocolate: The Slow Loss of Foods We Love, Simran regards this beloved treat with a mix of reverence and concern. Chocolate is threatened, but there are ways to ensure its survival, Simran explains. Maddie examines another part of your dinner that’s under threat in the Bay Area, and Tom divulges how beer made advanced civilizations possible.