Gordon Ramsey may be the best-known of the current British celebrity chefs, but Darren McGrady, the former Buckingham Palace chef and author of Eating Royally has an exceptionally elegant resume. McGrady, who now lives in Dallas, was personal chef to the late Princess Diana until her death; prior to that, he was senior chef in the kitchens of Buckingham Palace where, his official biography notes, "he traveled around the world with the Queen and the royal family." His cookbook -- a compilati