Decadent Drinks Glen Garioch 52-year-old is a very old single malt Scotch whisky from the Highland distillery Glen Garioch, distilled in 1973 and bottled at a natural-looking strength of 53.2% ABV. With more than five decades of maturation, this style of whisky is typically prized for layered maturity, concentration, and oak-led complexity rather than youthful brightness.