Tamdhu (12 year)
Aged exclusively in sherry casks for the full 12 years of maturation for that pure sherry bomb goodness, Tamdhu uses both first fill and refill American and European Oloroso sherry casks. I’ve discussed sherry aging on this blog before, and the topic is (as ever) murky. It’s probably safe to assume that the company is using whatever “real” sherry barrels (those would be the European oak casks) it can get its hands on, while supplementing their supply with American oak (ex-bourbon) that has been “seasoned” with sherry.