I sometimes avoid defining “Single Malt Scotch” during whisky tastings because I get the inevitable questions that cause more confusion than clarity. Single malt scotch is a single distillery whisky made in Scotland of 100% malted barley. It's most often blend of hundreds of barrels, and so long as those barrels contain 100% malted barley whisky that was distilled in the same distillery, it's defined as single malt scotch.