title_body: Does Wacaco really produce hot espresso (and how)?
upvoted_answer: Well according to the video presented on the website you have to provide hot water. 
  
  To my understanding of the machine's principle as well as physics there is absolutely no way it could produce hot coffee from cold water. The confusing quote from the FAQ
  
  
    Minipresso produces at ambient condition (75°F, 24°C), an espresso at perfect temperature (152°F, 67°C in cup) with a nice compact and persistent crema on top.
  
  
  actually is about temperature loss during the process.