The Speyside based Tamnavulin Distillery has announced the launch of a new limited-edition release to mark its 60th Anniversary. Tamnavulin 25 Year Old Diamond Anniversary Edition (51.8% ABV) is a cask-strength single malt Scotch whisky. It was initially matured for 20 years in American oak barrels, before being finished for a further five years in a Moscatel wine cask. This latest release was distilled in 2000, when the stills were…