I used the Japanese Hibiki Harmony, which has distant fruity and citrus notes. Strongly recommend twisting thick grapefruit zest. Love it, this is a shiny newcomer.
A cocktail, where Fernet Branca shines affront: remarkable, we love it.
Also, you might want to try it with Maple, instead of sugar syrup and Single Malt Scotch of your choice.
Excellent cocktail. Mezcal(or Reposado Tequila) and Cinnamon are established combination. I agree with G.M.G. about the distant lemongrass (Thai) echo. Being wonderful, as this cocktail is, I kindly suggest using 10ml Benedictine DOM instead of Falernum: outstanding.