title_body: Is the moka pot predisposed to producing burnt or bitter coffee?
upvoted_answer: This is nothing I've tried myself, but to add onto your theory of the heat required to brew the Moka-Pot, I believe we'll arrive at an answer. The problem is not likely the water temperature itself, it turns out it's realistically pretty difficult to get boiling water onto coffee when using some sort of brew method (as the metal absorbs enough heat to drop the water temp). 
  
  However the lengthy heat time on the mokapot will actually heat up the ground coffee itself during brew, and this can lead to poor tasting coffee. The best thing you can do, from my understanding is pre-heat the mokapot bottom and start with hot water before assembling and putting on the stove. Additionally, as soon as the coffee starts spurting, it's done and you can run under cool water to halt brewing as well.
  
  I got most of this info from a mokapot video I saw a while back, thought it might help you as well: https://www.youtube.com/watch?v=rpyBYuu-wJI.