Dewar’s 18 Year Old Scotch Whisky is a special blend of rare whiskies that are double-aged to create an exceptionally smooth flavor. Dewar’s 18 Year Old Scotch Whisky is soft and buttery with notes of honey, marzipan and almond. A long, rich oak finish lingers on the palate. John Alexander Dewar wanted more control of the malt at the heart of his family’s blend. He knew there could only be one place for his distillery. Aberfeldy. A land he knew well and with its own source of fresh water at Pitilie Burn. By the time John died in 1880, he left behind a thriving business and two children who would take over the business.