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 single malt whisky produced from the same distillery is still considered a single malt whisky. The "malt" part of the term refers to the use of a malted grain to make the whisky. In Scotch whisky, this grain is required to be barley. Outside Scotland, whisky is produced from other malted grains, such as malted rye, and the term "rye malt whisky" is specifically recognized along with (barley-based) "malt whisky" in the code of federal regulations for whisky in the United States. Moreover, in much of the world, whisky is often made using grain that is not malted (for example,