Scotch whisky is defined as a whisky produced in Scotland from malted barley that has been distilled and aged in oak barrels for a minimum of 3 years. There are two main types - single malt, which comes from a single distillery, and blended whisky made from a mixture of malts and grain whisky. Popular brands of single malt include Glenfiddich and Glenlivet, while Johnnie Walker and Dewar's are well-known blended Scotch whiskies. The production process begins with malting, mashing, fermentation, and double distillation of the wash. The new make spirit is then aged for many years in oak casks to produce the smooth, complex