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
Grant's Australia and the Far East. In 1915, a new law stated that the minimum maturation period for Scotch whisky was to be two years (today it is three). While this led to the ruin of many a Scotch whisky distillery, William Grant had kept a supply of aging whisky in stock and was able to ensure continued production. William Grant died in 1923 but by this time, the family business was well established. In 1963, William's great-grandson, Charles Gordon, oversaw construction of the Girvan grain distillery – now the world's second largest grain whisky producer. In 1979, Grant's UK sales