A "Single Cask" refers to whisky that is bottled from a single barrel, rather than being blended with whisky from multiple casks. This method preserves the unique characteristics and flavors imparted by that specific barrel, making each bottle distinct. Single cask whiskies often showcase the influence of the wood, the distillation process, and the aging environment. Typically, single cask whiskies are released in limited quantities, as each barrel produces a finite number of bottles. They are often sought after by collectors and enthusiasts for their rarity and unique flavor profiles, which can vary significantly from one cask to another, even within the same distillery, such as Glenfiddich or Macallan.