Daniel Zwerdling is a national correspondent for NPR who has covered everything from terrorism to food. His wife Barbara Rothschild is a therapist. Together they've traveled the world indulging themselves in their mutual love for food. At home, they not only cook together but see their shared time in the kitchen as therapeutic. They team up to show Joan two revisionist versions of traditional recipes: a low-calorie whitefish salad and a healthy version of salade frissee.