A silly question that may appeal to those of a scientific and mathmatical persuasion.
I'm not in the habit of ordering "Extra Cold" beers but something got me wondering about if I ordered a pint of Extra Cold whatever, roughly how long would it take in an average pub environment for the beer to reach the temperature of a similar non-Extra Cold pint? I can't believe that the benefit (if there is any) would last long enough to warrant all the hype/promotion/effort of selling Extra Cold beers.
Another angle...Some of us (and I include myself) are quick to moan when an ale is served too cold. Next time it happens, how long should I realistically leave it to reach the appropriate drinkable temperature?
I know most of us are ale drinkers but on the occasions when we are faced with the choice, does anyone actually opt for Extra Cold over normal and why?