From bat on the island of Fais to chicken on a Russian train to barbecue in the American heartland, from mutton in Mongolia to couscous in Morocco to tacos in Tijuana - on the road, food nourishes us not only physically, but intellectually, emotionally,and spiritually too. It can be a gift that enables a traveler to survive, a doorway into the heart of a tribe, or a thread that weaves an indelible tie; it can be awful or ambrosial - and sometimes...