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
Valpolicella develop. The Amarones are then aged for several years, with many premium examples being aged for at least five years prior to release. They are often aged in large wooden barrels of either Slavonian or French oak. Traditionally the barrels are older and essentially "neutral", in that they do not impart much flavor or wood tannins, but in the late 20th and early 21st centuries more Amarone producers have been experimenting with the use of smaller new oak barrels that introduce more oak flavoring to the wine. Amarones are rich, full-bodied wines with flavor and aroma notes that are often