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
Scotch whisky and smoother, because a column still can perform the equivalent of multiple distillation steps in a continuous distillation process. Second, the "phylloxera" bug destroyed wine and cognac production in France in 1880. Scotland was traditionally divided into four regions: The Highlands, The Lowlands, The Isle of Islay, and Campbeltown. Due to the large number of distilleries found there, the Speyside region is now also recognized by the Scotch Whisky Association (SWA) as a distinct region. The whisky-producing islands other than Islay are not recognised as a distinct region by the SWA, which groups them into the Highlands region. Although only