Mayflies: A Flavor Like Soft Butter

March 6, 2006 By: Marshall Cutchin

Why will trout completely ignore the early-season hatches of a particular fly, yet gorge themselves on the bugs after a few weeks? London Times fishing correspondent Brian Clarke guesses it’s about taste, then finds that theory endorsed by the research of famed Irish guide Robbie O’Grady, who does his own “field testing.”