Scotch whisky is a legally protected spirit distilled and aged in Scotland, made primarily from malted barley or other grains, and aged for a minimum of three years in oak casks. Scotland’s whisky regions—Islay, Highlands, Speyside, Lowlands, and Campbeltown—offer distinct styles: Islay whiskies are famous for their bold peat smoke, while Speyside is known for elegant, fruity and honeyed malts. Production must follow strict regulations: it must be distilled to no more than 94.8% ABV, aged in oak casks (often ex-bourbon or sherry barrels), and bottled at no less than 40% ABV, with no additives allowed except water and caramel coloring.