Let me say this first--I drink sherry cask finish Scotch less than 50% of the time, and, when I do usually prefer a nice strong accent as you would find in Aberlour 12 or Glenfarclas 10. However, when you are in the mood for a sherry-bomb, this is your ticket. It has a super-strong sherry influence. I would guess that all of it is finished or aged in sherry casks, not just a certain portion. This is not a one-trick pony, besides the heavy sherry notes there is malt, fudge, vanilla, nuttiness and a bit of spiciness. This is a great Scotch. The downside is that it usually costs as much as a good 15 year old.