Stout and Whiskey have always lived behind the bar...

I stopped in my local bottle shop the other day, and found this - Jameson Caskmates Irish Whiskey. I am not exactly sure when this particular collaboration began, but since the Franciscan Well Brewery opened in 1998, it must have been some time after that.
  What this is - not unlike the cooperation between Grant's Whisky and Innes & Gunn brewery - is a whiskey aged in barrels that formerly held beer, in this case a stout brewed by the folks at the Franciscan Well Brewery.
  I haven't tried this yet, but as a fan of good Irish whisky, I am looking forward to it - and will report back soon.
  For the full story on Jameson Caskmates Irish Whiskey, click here.
  As John Jameson said: "So smooth I would drink it even if my name weren't on it." I agree!

Update: I was cruising around the interweb today and found the Jameson press release for Caskmates. In part it noted: Born in 2013 over drinks at a local neighborhood pub in County Cork, Ireland, Caskmates was created by two longtime friends, Dave Quinn, Master of Whiskey Science at Jameson Distillery and Shane Long, Head Brewer at local Irish micro-brewery Franciscan Well.
There you go - cheers!