The Quest for the Holy Grain - Best Brew Pubs
Ireland

 

 

 

J.W. Sweetman Craft Brewery
(Formerly Messrs. Maguire)
1-2 Burgh Quay
Dublin, Ireland
(1) 670 5777

J.W. Sweetman Craft Brewery is at the address that was formerly Messrs. Maguire near Trinity College in Dublin. 
The brewing operation is in a glass-enclosed storefront, visible from the street and also from the inside.  It seems like an average-size bar until one realizes that there is a duplicate bar area upstairs. 
Sweetman has five of their own beers on tap as well as a range of bottled craft beers from around the world.

 

 

The Porterhouse Central
45 - 47 Nassau St
Dublin 2
tel: (+ 353 1) 6774180

One of the Porterhouse brewpubs in Dublin is right across the street from the entrance to Trinity College.  A moderately-sized bar being in the front, one is surprised to find that in the back room is another moderately-sized bar.  They have about 10 of their own brews on tap, with guest taps of the other usual beers.  Unlike the Porterhouse in London, there is no emphasis on bottled guest beers.  A brewing operation is not evident.