The oldest permanent release in the Redbreast family, 27-Year-Old is a Single Pot Still Irish Whiskey comprising exclusively of Pot Still whiskeys which have been triple distilled, matured in the finest bourbon, sherry and ruby port casks for no less than 27 years, and left untouched.

https://www.redbreastwhiskey.com/en-en/the-range/redbreast-27-year-old-whiskey