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
Blended malt whisky using a corn mash). In practice, unless a different grain is specifically mentioned, a "malt" whisky is assumed to be made from barley. In the case of Scotch whisky, blended malts do not contain any whisky made from grains other than barley or spirits distilled using continuous distillation, unlike products labelled as "blended whisky". For the Scotch whisky industry, the terms "vatted malt" or "pure malt" have been reclassified as "blended malts" per the Scotch Whisky Regulations of 2009, and it has become unlawful to label Scotch Whisky using the prior terminology. When an age statement appears on the label