Old Perth 'Cask Strength' Blended Malt Scotch Whisky 700mLOld Perth 'Cask Strength' Scotch Whisky From one of Scotland's oldest Whisky families; previous owners of Bowmore, Auchentoshan and Glen Garioch; the Morrison Family. Old Perth scotch whisky was a lost blend that was originally created by the fiercely proud Perthshire family, the Thomsons. It was the familys blender, Peter Thomson who originally produced the 'Old Perth' blend. In homage to Peter every box of Old Perth carries his familys name. One of