title_body: Is soap/water enough to get safely clean coffee mold from my mug?
upvoted_answer: I would feel confident drinking out of a ceramic mug after a good scrubbing with soap and water.  Smooth (glazed) ceramic surfaces are more easily cleaned than rough ones, so perhaps the rough ones deserves extra effort.
  
  If there is a concern about sanitizing the mug, putting water in the mug and leaving it in the microwave on high until the water boils should kill any mold.  According to this 2012 Penn State Extension bulletin on important temperatures for food safety:
  
  
    Processing foods in a boiling water bath will kill most bacteria, molds and yeasts.