Probably Speyside's Finest 1968-2009 40 Year Old Douglas Laing Old Malt Cask Single Cask 5047 (70cl, 50%)

Probably Speyside's Finest 1968 is a 40 year old Speyside single malt from a single cask, released by Douglas Laing in 2009 as part of its Old Malt Cask series. It comes in a 70cl bottle, without colouring or chill filtration. Cask 5047 was a sherry butt, and it yielded 361 bottles. They were bottled at 50% ABV, the strength Douglas Laing prefers for the Old Malt Cask series. The whisky was distilled in 1968, so it spent forty years in the cask before bottling.