The distillery is the only Scotch whisky distillery to use a single source of natural spring water. This source is the Robbie Dhu springs. Glenfiddich is matured in oak casks such as rum casks from Cuba (in the case of Gran Reserva), Bourbon whiskey barrels from America (Ancient Reserve), or sherry butts from Spain..
I was recently given an old bottle of Glenfiddich (purchased before 1988 so I'm told) and I can't pick it's actual age or anything else about the bottle or it's contents. The label states that it's a "Glenfiddich Special Old Reserve", but nothing else. I've found 1 or 2 sites selling the same bottle but they don't contain any more information.
Glenfiddich Special Reserve 12 YO 75cl comes from the Valley of the Deer since 1887 and is the world's most awarded single malt Scotch whisky. With a unique freshness from the same Highland spring water we've used since 1887, its distinctive fruitiness comes from the high cut point William Grant always insisted upon.
Glenfiddich - Gran Reserva 21 Year Old Rum Cask Finish Speyside Malt Whisky 70cl Bottle £ 133.73 In Stock Buy 0 Glenfiddich - Solera Reserve 15 Year Old Speyside Malt Whisky 70cl Bottle £ 47.53 In Stock.