In the 1960s, Mark Edwin Andrews purchased the remaining casks of pure pot still whiskey from the prestigious B. Daly Distillery in Tullamore. He named the whiskey after the castle he owned in western Ireland. The Knappogue Castle 1951 represents the last remaining vintage in his collection. Distilled in 1951, the spirit was aged in sherry casks for 36 years before being bottled in 1987. It is the oldest and rarest Irish whiskey in the world. Only 300 bottles of this whiskey are released each year. Suggested retail price is $1,600.