15 YR SING MALT SOLER/ Glenfiddich 15 Year Old expression is created using a technique pioneered by our Malt Master and its warm, spicy flavours are transformed with the alchemy of the Solera Vat.  Aged in European oak sherry casks and new oak casks, the whisky is mellowed in our unique Solera Vat, a large oak tun inspired by the sherry bodegas of Spain and Portugal.