title_body: Why doesn't bottled beer taste as good as draught beer?
upvoted_answer: There was a study about this which concluded that tapped beer can actually be better for different reasons (although taste is rather subjective). The reasons are:
  
  
  Beer on draught tends to have less air within the barrel compared to its bottled counterpart, meaning that the beer doesn't oxidise as quickly
  Beer within a barrel tends to remain cool for longer periods. A bottled beer cools and warms up a lot faster, which (when this occurs) has a nefast effect on the beer's taste