Contributor Melissa Clark digs into the fragrant food of Lebanon with Maureen Abood, author of Rose Water & Orange Blossoms. Jeremy Nolen, author of New German Cooking, says German food is more than sauerkraut and schnitzel. Kimberly Jung co-founded Rumi Spice, a business that buys saffron directly from Afghan farmers. We meet up with a man with synesthesia — he tastes what he hears — and learn about his project to map out the tastes of the London Underground. Neil Kelley, a research fellow at the Smithsonian, explains what we can learn about animals’ diets from studying their skull and teeth. The Sterns visit The Old Coffee Pot Restaurant in New Orleans.