when conditions are perfect (which I achieve less than half the time) a proper espresso macchiatto can smell and taste like you are drinking chocolate.

I have had some coffee (blue bottle in the bay area in 2010, specifically) that smelled so much like shit I was worried they were literally putting shit into my cup. I learned after looking into it that there is some molecule that is present in both coffee and shit and apparently their process was really empasizing that molecule at the time.