This looked really sweet as written so I cut back a bit on the honey and used a 2:1 ratio of rye:amaro. Good, and still plenty sweet. I'm surprised to see it labeled an "Old Fashioned" since it's very similar to both the Black Manhattan and the Monte Manhattan, with Angostura replaced by pimento bitters (I used pimento dram).
This was excellent. The saline solution does help pull out more flavours of the cocktail. The spiciness of the rye shines in this cocktail. On my favourites.
The salt is what makes a difference in this fabulous cocktail. Didn't have pimento bitters so I ground allspice with sea salt in a mortar and added a bit of hot water to get the flavours extracted. Used the finely strained mixture in place of bitters and saline solution.