Beer does not benefit from always staying cold. If you get bored, it is relatively easy to do a double-blind test.
...but if you have a bottle conditioned ale, sometimes you can tell the difference because the 'warm' one can reactivate the yeasts and change the flavor slightly.
...but if you have a bottle conditioned ale, sometimes you can tell the difference because the 'warm' one can reactivate the yeasts and change the flavor slightly.