Arran Millennium Casks 53,5%

In 2013, the Arran Distillery released a bottling called Millennium Casks. The spirit for this single malt whisky was vatted on December 31, 1999 and January 1, 2000 (35 bourbon and 10 sherry casks). After 13 years this resulted in 7800 bottles at 53.5%