"Northern Beer"
As in the style of beer that would be classic traditional northern beer. Pretty crap.
However, ales from northern breweries - as in styles of beer without any particular geographic attachment. Pretty good. Just like decent ales from anywhere else.
"eee, look at tha's flat soothern beer, it's got no foamy 'ead on it ya soft soothern panseh".
"fuck off twat, I want a drink not a shave"