Served a keg on Saturday (I hope I don't have to explain why, what with it being the proper holiday and all). I didn't get the sour right, maybe because I only let it sit two days instead of four. Also this was fuller-bodied and less sweet than Guinness (which was also served at the party).
But guess what?! Everyone liked what I had in the keg more! Always a great sign! I'd certainly brew this again, especially how well that complemented the Irish carbombs that were insisted every hour! Cheers.