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
Blackadder (whisky bottler) "Aberdeen Distillers" and "The Clydesdale Original Scotch Whisky Co. Ltd." Since 2000, Blackadder has also offered the "Raw Cask" series, which consists of whisky bottled directly from the cask, without even mechanical filtering. The lack of filtering leaves some detritus in the bottles including fragments of cask wood. In 2014 Blackadder introduced a range of whiskies called Black Snake. These whiskies are produced using a Solera system, where aged single malts are placed into either an Oloroso or PX Sherry cask for further aging. When deemed ready, 2/3 of the cask is drawn to be bottled and the cask is