On this week's episode of Beer Sessions Radio, the topics of discussion are nitrogen ("the good beer gas") and Irish beers. Jimmy and Anne are joined in the studio by John Holl, editor of All About Beer magazine, James Tai of Guinness, Lars Dahlhaus of Liquid Projects, Barry Smyth and Richard Stokes of The Porterhouse at Fraunces Tavern NYC, and brewmaster Matt Brophy of Flying Dog Brewery.