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 five regions are specifically described, any Scottish locale may be used to describe a whisky if it is distilled entirely within that place; for example a single malt whisky distilled on Orkney could be described as "Orkney Single Malt Scotch Whisky" instead of as an Island whisky. Notes Cited sources Other sources Scotch whisky Scotch whisky (; often simply called Scotch) is malt whisky or grain whisky made in Scotland. Scotch whisky must be made in a manner specified by law. All Scotch whisky was originally made from malted barley. Commercial distilleries began introducing whisky made from wheat and rye