Types of Barrel used for Aging - It is aged for 21 years in a combination of ex-Bourbon and 1st fill oloroso sherry casks Irish Whiskey Awards - Best Irish Whiskey (Overall Winner) Irish Whiskey of the Year 2014 Best Irish Whiskey (Overall Winner) Irish Whiskey of the Year 2014 Gold Medal Winner - Irish Single Pot Still Whiskey 2016 Gold Medal Winner - Irish Single Pot Still Whiskey 2018 Irish Whiskey Masters - Gold - Irish Whiskey Masters - 2023 Gold - Irish Whiskey Masters - 2022 Master - 2021 World Whiskies Awards - Gold Redbreast 21 year old is the finest representation of the signature Redbreast sherry style - it is the oldest and richest expression of Redbreast ever produced; and the 21 year ageing process introduces new levels of depth, flavour and taste to create an inherently complex and ultimately, rewarding whiskey. It is made from a mash of malted and unmalted barley, triple distilled in copper pot stills, and finally, matured in a combination of American bourbon barrels and first fill Spanish oloroso sherry butts.