The two best-selling single malt whiskies in the world, The Glenlivet and Glenfiddich, come from Speyside. Speyside has the greatest number of distilleries of any of the whisky-producing areas of Scotland.
Speyside whiskies can generally be classified as light and grassy (e.g. Glenlivet) or rich and sweet, (e.g. Macallan).