Jameson Black Barrel (previously known as Select Reserve in some markets) is blended from two whiskies: a small-batch grain whiskey distilled at Midleton...
It's a big step up in flavor and depth, for not much more money, from the "standard" Jameson or Bushmills. This is now my standard Irish for cocktails. I save the "big 12-year" ones, such as Redbreast, for neat drinks.
Robert Arnold