Tropical but far from sweet, led by an interplay between mezcal, pineapple and lime, spiced by cinnamon, with bourbon providing this sour's underlying...
The effect of the mezcal and pineapple juice are apparent - I'm sure the bourbon and cinnamon syrup are contributing (esp sweetness) but the flavor notes are far in the background. A tasty cocktail esp. if you like sweetish grilled pineapple (I thought it was very good).
To our taste, an excess of pineapple juice can dull the brightness of a Sour. So we split the juice 50:50, with 22.5ml each of pineapple and lime. Lovely for us. An excellent cocktail.