Ushuaia [1] has sprouted a plethora of pubs, some with Irish aspirations or pretensions, such as Dublin (9 de Julio 168), with a standard menu of Argentine minutas (short orders) such as milanesa (chicken-fried steak). More strictly Argentine is Ushuaia Che Que Potito (San Martín 471), with eclectic decor, a menu that’s a step above pub grub (the lightly fried rabas or squid rings are excellent), and live music weekends (usually starting around 1:30 a.m.).
Links:
[1] http://www.moon.com/destinations/chile/southern-patagonia/ushuaia-argentina