title_body: Does Cuban coffee include sugar?
upvoted_answer: I wouldn't say that beans that have been roasted this much are sweeter. At some point, when the bean turns black the sugars break down into carbon and a brew with those beans would be less sweet than with a standard medium espresso roast. I guess somewhere at around the second crack the sugars will be gone and only "charcoal" is left.
  
  So I'm assuming they either mixed the ground coffee with the sugar before you saw the coffee or you somehow missed it otherwise. Because a sweet cup with those black charcoaly things seems unlikely if you don't put sugar in it. As far as I know cuban coffee is indeed coffee with some kind of brown raw sugar mixed in it.