Fosters? Who drinks that shit <insert vomit icon> I dont know of any Aussies that would, bloody horrible crap thats sold to unsuspecting tourists and overseas crowd. There are much better beers about, for eg Boags Premium, Hahn etc
I must admit though given my recent jaunt OS I have succumbed to San Miguel pale pilsners and even their light beer.
I havent tried the Snhiner Bock I must try and search for it and give it a rating 
You'll have better luck with "Shiner Bock"

. Still, its nothing to write home about, just a really good, dry, kind of light drinking, dark beer. Geared for hot weather, but still has some body to it. Its just a lot better than you'll find on tap in the average US roadhouse and its universal in Tx. Negro Modelo would come close, and it'll be easier to find.
FQ13 who reccomends both for making chile and borracho beans