In Pass The Butterworms Cahill takes us to the steppes of Mongolia where he spends weeks on horseback alongside the descendants of Genghis Khan and masters the "Mongolian death trot"; to the North Pole where he goes for a pleasure dip in 36-degree water; to Irian Jaya New Guinea where he spends a companionable evening with members of one of the last head-hunting tribes. Whether observing family values among the Stone Age Dani people or sampling delicacies like saut ed sago beetle and premasticated manioc beer Cahill is a fount of arcane information and a master of self-deprecating humour.