title_body: Can I reduce harmful terpenes?
upvoted_answer: Terpenes are the lipids (oils) that give the main flavor to your cup. Therefore, you don't want to reduce them normally. However, if you really want to reduce them, best choice is, as stated thick filtered drip machines. (One can be seen in this post: Coffee in Breaking Bad )
  
  Another brewing methodology that may be used is Turkish coffee. As coffee is heated from room temperature to near boiling points, you have (somehow) control over which lipids will evaporate during the process. You may modify the triple heating cycle of the Turkish coffee brewing to a single heating near or a bit over boiling point. (See this answer: Triple heating of the Turkish coffee )