Whisky that is made from malt, distilled in simple still and matured in oak cask for more than 3 years is called malt whisky. Malt whisky that was bottled from only one distillery is called Single Malt. Producing area is classified to Highland, Speyside, Roland, Islay, Islands and Campbeltown. The characters of single malt whisky can be influenced by the location of the distillery, climate, the quality of water, the natural environment.