title_body: Does a frosted glass cause any significant dilution of the beer it holds?
upvoted_answer: I would say that the condensate amounts to no more than 1ml for a 500ml glass, which is a 0.2% dilution. 
  
  No to be too coarse, but I imagine most people dilute the beer more after taking a sip! 
  
  Comparatively, I think the excessively cold temperature will contribute more to destroying the flavor than a small amount of condensate from the glass. 
  
  So, if you enjoy the beer in a frozen glass, then keep at it.