Eating Out

A restaurant wasn't always a place to eat.  It used to be a thing to eat - a cup of medicinal broth to restore your health.  These days Americans eat almost half their meals out, so how did the modern restaurant evolve?  In this hour of To the Best of Our Knowledge, the rise of the restaurant.  Also what really goes on behind the swinging doors - a chef's confessions.  How food affects our mood, and how our junk-food habits reveal who we are.