What does the term "cask strength" mean?

The concept of "cask strength" refers specifically to a spirit that is bottled directly from the cask without any dilution. This means that the alcohol content in a cask strength spirit reflects the natural strength of the spirit as it comes out of the aging cask, which can be considerably higher than the typical bottling strength that is around 40% ABV (alcohol by volume). Bottling at cask strength allows consumers to experience the full flavor profile and uniqueness of the spirit as intended by the distiller.

When spirits are diluted prior to bottling, it can alter the flavor and aromatic characteristics, which is not the case with cask strength offerings. Aging in multiple casks may add complexity and depth but does not define the strength at which the spirit is bottled. Additionally, flavoring during distillation adds different notes to the spirit but diverges from the definition of cask strength. Thus, the accurate choice highlights the authenticity and robustness of spirits that are celebrated for their natural characteristics right as they leave the cask.