I bottle a few every time I fill a keg. I have been drinking some bottles from a couple years ago. I usually only drink the bottled beer on camping trips or road trips, but I thought some were getting too old and I should drink them. Darn fine beers with a thick creamy head. The fun thing is that I don't know what is in the bottle. They are only labeled with the bottling date. I have some Apfelwein from 2007.
They don't go bad, so you shouldn't need to pasturize. That is why the ancient armys traveled with beer. The sailors had their beer and grog. It helps ugly people get laid and helps white people dance and sing kereoke.