Wayne Collins, this cocktail's creator, originally used equal parts as is usual for a classic Negroni, and after trying various other formulations, I've...
I'm sure it's sacrilege, but I occasionally switch out the Lillet Blanc for Italicus and then add some grapefruit bitters and a twist. It has more power to battle the bitterness of the Suze, and the result is exceptional and balanced.
Not sacrilege at all. A tasty cocktail. I've added to Difford's Guide as Walthall’s White Negroni, although please let me know if you'd like to rename. Many thanks for the suggestion.