title_body: Is "cold brew" an oxymoron?
upvoted_answer: Yes, the term is an oxymoron.
  
  Miriam Webster agrees with your definition of brewing involving hot water:
  
  
    to prepare (as tea) by infusion in hot water
  
  
  That is why the word cold is used as a qualifier to show that it is done with cold water rather than hot water.