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 as long ago as 1494, as documented in the "Exchequer Rolls", which were records of royal income and expenditure. The quote above records eight bolls of malt given to Friar John Cor wherewith to make aqua vitae (Latin for "water of life," = "uisge beatha") over the previous year. This would be enough for 1,500 bottles, which suggests that distillation was well-established by the late 15th century. Whisky production was first taxed in 1644, causing a rise in illicit whisky distilling in the country. Between the 1760s and the 1830s a substantial unlicensed trade originated from the Highlands, forming a