Malt whisky whisky regulations require malt whisky to be made in pot stills using water and malted barley without the addition of any other cereals, and the whisky must be aged for at least three years in oak casks. The use of new barrels is not required. Caramel coloring can be added, but no other additives are allowed. Irish whiskey regulations are almost identical to Scotch regulations. Malt whiskey must be distilled in a pot still from a mash of 100% malted barley, which may be peated or unpeated in character, although unpeated malt is typically used. All Irish whiskeys must be
Grant's Australia and the Far East. In 1915, a new law stated that the minimum maturation period for Scotch whisky was to be two years (today it is three). While this led to the ruin of many a Scotch whisky distillery, William Grant had kept a supply of aging whisky in stock and was able to ensure continued production. William Grant died in 1923 but by this time, the family business was well established. In 1963, William's great-grandson, Charles Gordon, oversaw construction of the Girvan grain distillery – now the world's second largest grain whisky producer. In 1979, Grant's UK sales