If you get yourself a bottle of Jameson Gold Reserve Irish Whiskey, you'll discover no exact age stated on the bottle. The only hint given is found on Jameson's website: Jameson Gold Reserve is a blend of three "advanced years" Whiskeys. Priced above Jameson 12 Year and below Jameson 18 Year, you can assume Jameson's Gold Reserve whiskey is a blend of whiskeys within or near the same age range. The three whiskeys also differ by the barrels they were aged in: one from virgin oak barrels and the others from bourbon and sherry casks. You'll be able to taste the toasted wood, bourbon and sherry influences along with the smooth, peppery flavor Jameson is known for.