Glenfiddich 12 is not a sherry itself, but it is matured in both American and European Oak Sherry casks, which imparts a unique and distinctive flavor profile to the whisky. The use of sherry casks in the aging process adds depth and complexity to the whisky, resulting in a richer and more refined taste.
The use of sherry casks in whisky production is a traditional practice that dates back many years. Sherry is a fortified wine that is produced in Spain, and the casks used to age the sherry can be repurposed for whisky maturation. These casks are made from oak and have previously held sherry for a number of years, allowing the flavors of the sherry to seep into the wood.
When whisky is aged in sherry casks, it absorbs some of the characteristics of the sherry, such as the fruity and nutty flavors, as well as the subtle sweetness. This interaction between the whisky and the sherry casks creates a unique flavor profile that sets it apart from whiskies aged in other types of casks.
Glenfiddich 12, specifically, is matured for 12 years in a combination of American and European Oak Sherry casks, which adds layers of complexity to the whisky. The American Oak casks contribute vanilla and toffee notes, while the European Oak Sherry casks bring in rich fruitcake flavors and hints of spice.
I have personally experienced the distinct flavors that sherry cask aging can bring to a whisky. I remember tasting Glenfiddich 12 and being pleasantly surprised by the depth and richness of the flavors. The sherry influence was evident in the fruity and nutty notes, as well as the overall smoothness of the whisky.
While Glenfiddich 12 is not a sherry itself, it is aged in sherry casks, which greatly influences its flavor profile. The use of American and European Oak Sherry casks adds complexity and richness to the whisky, resulting in a distinctively refined and flavorful experience.