title_body: How many milligrams of caffeine are in a fresh coffee bean?
upvoted_answer: There are about 6 mg of caffeine in one coffee bean. Darker roasts may have 10-15% less. 
  
  
    ...dark roasts have a stronger taste, but the roasting procedure they experience decreases their caffeine content by 10 to 15 percent. If you prefer dark roasted beans, congratulations! They basically contain 15% to 20% less caffeine than the lightly roasted ones.
  
  
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