Aberfeldy 20 Years Old 1998 Exceptional Cask Series is a 20-year-old small-batch whisky. It was distilled on 27 April 1998 at the Aberfeldy distillery and is part of Dewar’s Exceptional Cask Series. The whisky first aged in ex-bourbon casks for more than fifteen years and matured another five years in first-fill sherry casks, before being bottled on 25 March 2019 at 43%. This is Batch No. AB2798. Only 3600 bottles of Aberfeldy 20 Years Old 1998 Exceptional Cask Series were released.