Single malt whisky Single malt whisky Single malt whisky is malt whisky from a single distillery, that is, whisky distilled from a fermented mash made with malted barley, as distinguished from unmalted grain. Single malts are typically associated with single malt Scotch, though they are also produced in various other countries. Under Scotch Whisky Regulations, a "Single Malt Scotch Whisky" must be made exclusively from malted barley (although the addition of E150A caramel colouring is allowed), must be distilled using pot stills at a single distillery, and must be aged for at least three years in oak casks of a capacity not exceeding
Scotch whisky the other, a "whisky – product of Scotland" that complies with the generic EU standard for whisky. According to the Scotch Whisky Association, allowing non-Scotch whisky production in Scotland would make it difficult to protect Scotch whisky as a distinctive product. The majority of grain whisky produced in Scotland goes to make blended Scotch whisky. The average blended whisky is 60%–85% grain whisky. Some higher-quality grain whisky from a single distillery is bottled as single grain whisky. Blended malt whisky—formerly called "vatted malt" or "pure malt" (terms that are now prohibited in the SWR 2009)—is one of the least common