OK, when I took a class on brewing and wine in the 1970s, I learned that commercial tap beer is not pasturized and contains living yeast. I thought I remember this becasue it was stated that this is the reason tap beer (commercial tap beers) must be kept refrigerated at all times.
Later I learned that commercial beers are often filtered.
Is this true? If I condition by home brew in a Corny at room temp, why can't commercial beer in kegs be stored at room temp?