I find about 3-5 years to be a nice sweet spot with a lot of the Bourbon County's. Past that goes downhill with oxidation, year 1 and 2 a bit hot.Had several varieties of Bourbon County Stouts from Goose Island yesterday.
A buddy keeps these things for year's on end so we had some 2019, 2020 and 2023's yesterday.
The proprietors blend from what I was told is only for sale in the Chicago area. The 2020 Propietor's Blend was outstanding. Exactly was a Christmas beer should taste like.
2020
www.gooseisland.com