Reminder for Tomorrow: Don't Drink Green Beer!
If you want a real Irish beer to imbibe in honor of the Feast of St. Patrick, then Smithwick's Irish Ale is the one I recommend.
Smithwick's (pronounced "Smithick's" or "Smiddick's") is brewed in the 12th Century St. Francis Abbey in Kilkenny, Ireland (I've been there and tasted my first pint of Smithwick's in a nearby pub), and is touted as "Ireland's Oldest Ale", dating from 1710.
Previous Pro Ecclesia posts on this subject:
Don't Drink Green Beer!