Speyside Single Malt Scotch Whisky  has been matured in Spanish sherry casks. These casks are responsible for much of the flavour and specially selected by Malt Master Brian Kinsman. Before bottling, the whisky was brought together in a Solera cask. There, the whisky was given time to become a complex whole. The Glenfiddich - Reserve Cask is a full-bodied single malt from one of the world's most highly regarded Scotch whisky distilleries.