The Boulevardier has been generating some recent discussion on another board and this variation (and it is a big variation) seems to be popular. I haven't had a chance to try it myself yet but intend to soon!
Boulevardier Riff by Fred Sarkis, Sable Kitchen & Bar, Chicago, IL
1 1/2 oz Bourbon, WL Weller
3/4 oz Cynar
3/4 oz Bonal Gentiane Quina
1 pinch Salt (small amount)
2 dash Orange bitters
Stir, strain, straight up, cocktail glass
The Left Hand and the 1794 variations also had some fans. I will get to them eventually!
That Left Hand sounds good.
I vary my Boulevardier by adding Luxardo Maraschino. Tried that, with orange bitters, but found it too bitter.