Robert Plant, Paul McCartney, and Mick Jagger convene once a year to discuss all the great foods they've found travelling the globe on tour. Robert is the first to excited reveal his 'big find'. He takes out a little pie tray from a brown paper bag and places it on the table. ""It's a pastry of some kind from Tanzania. It's akin to what we call a quiche, but uses yak cheese and quail eggs instead!"" ""Fascinating"" says Paul, who is next to present his favourite foreign food to the group. He pul…