Single malt whisky (and sometimes a third) time. The final spirit, called "new make spirit", generally has an alcohol content of 60 to 70%. Most new-make malt whisky is diluted to about 62.5% a.b.v. before it is placed in casks to mature. The "new-make spirit", or unaged whisky, is then placed in oak casks to mature. By law, all Scotch whisky must be aged for a minimum of three years in oak casks, though many single malts are matured for much longer. The whisky continues to develop and change as it spends time in the wood, and maturation periods of twenty years or
Scotch whisky bottling. For a variety of reasons, some independent brands do not identify which facility distilled the whisky in the bottle. They may instead identify only the general geographical area of the source, or they simply market the product using their own brand name without identifying their source. This may, in some cases, be simply to give the independent bottling company the flexibility to purchase from multiple distillers without changing their labels. According to the Scotch Whisky Association, Scotch whisky evolved from a Scottish drink called "uisge beatha", which means "water of life". The earliest record of distillation in Scotland occurred