Because Jeff, here in the UK unless you are lucky enough to get some traditionaly brewed lager all you get is that tasteless pap made in a factory [ not a brewery ] by the multinationals,sterilised to death and deliberately served ultra cold so you can't tell how shite it tastes, whereas ' real ale ' is [ generally ] produced in a brewery, using only natural ingrediants and delivered to your local pub still alive, ie the yeast still working.

eric