<br />Aptly named: It stings like the Green Hornet. Mostly because of the Green Chartreuse. I followed the recipe but found the Chartreuse to be overwhelming, and the Fernet Branca to be close behind.
I added about 1/2 oz more rye (Rittehouse 100) and added two dashes of Fee Bros Black Walnut bitters. I ended up with a 3.5 drink. Within the next week or so, I will use the following recipe: 2 oz Rittenhouse Rye 100, 1/4 oz Fernet Branca, 1/4 oz Green Chartreuse, and 2 dashes of Fee Bros Black Walnut Bitters. I would like to hear what others think about the amount of Green Chartreuse and/or Fernet Branca.
With this drink, personal taste may explain why I needed to make such major changes to end up with a decent drink. I believe the rye should be specified, however. Different ryes bring a different flavor to a drink, as does the rye's proof.