Single Malt Whisky is a distilled spirit made entirely from malted barley at a single distillery. The most notable examples of this are made in Scotland and are thus referred to as scotches. But not all scotches are single malts. Vatted Malts or Pure Malts are blends from the malt whisky of several different distilleries. A whisky that is labeled generically “scotch” is blended and contains only 40 to 60% malt whisky with the remainder comprised of whisky made from cheaper unmalted grain. All whisky must be aged for a minimum of 3 years before it can be described as such.