The Macallan distillery produces a number of expressions in its core Sherry Oak series, the most generally available being the 12-year-old, although the 18-year-old is widely distributed, alongside a 10-year-old cask strength expression at 58% ABV.  Expensive 25 and 30-year-old versions can also be found.  In 2004, The Macallan started to offer single malt expressions vatted with whisky matured in used casks other than ex–sherry casks as part of the Fine Oak range.  Macallan also markets special scotches in duty-free shops at airports such as the 1824 Collection.