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
Blackadder (whisky bottler) "Aberdeen Distillers" and "The Clydesdale Original Scotch Whisky Co. Ltd." Since 2000, Blackadder has also offered the "Raw Cask" series, which consists of whisky bottled directly from the cask, without even mechanical filtering. The lack of filtering leaves some detritus in the bottles including fragments of cask wood. In 2014 Blackadder introduced a range of whiskies called Black Snake. These whiskies are produced using a Solera system, where aged single malts are placed into either an Oloroso or PX Sherry cask for further aging. When deemed ready, 2/3 of the cask is drawn to be bottled and the cask is