Scotch whisky whisky used. An age statement on the bottle, in the form of a number, must reflect the age of the youngest whisky used to produce that product. A whisky with an age statement is known as guaranteed age whisky. Scotch whisky without an age statement may, by law, be as young as three years old. In the early 21st century, such "No age statement" whiskies became more common, as distilleries responded to the depletion of aged stocks caused by improved sales. Labels may also carry various declarations of filtration techniques or final maturation processes. A Scotch whisky labelled as "natural"
Scotch Malt Whisky Society distillery and second the individual cask from which the bottle was taken. For example, 2.35 represents the 35th cask acquired from distillery number two. Society bottlings are always referred to using this numerical code, rather than by the distillery name, as individual casks are unique and, therefore, may not be representative of the whisky produced by that distillery for ordinary retail. The number of bottles available from each outturn of a cask can vary – but single casks by their very nature only produce a limited amount of whisky so, more often than not, there is only a small number