I’ve already blogged about the creation of this drink over at Lichtenbergianism.com, but for the sake of completeness I’m adding it here.
The Viola Nouveau
- 1.5 oz brandy
- .5 oz Violette Syrup (recipe below)
- .5 oz Suze
- barspoon agave syrup
- 1/2 dash 18•21 Tart Cherry & Saffron Bitters 
Stir with ice, pour into coupe, twist lemon peel and toss it in, and finish with 3–4 drops more of the bitters.
Violette Syrup (Regarding Cocktails, p. 20)
- 2 oz gin
- 1 oz violet syrup, such as Monin Violet Syrup
- 1 oz simple syrup
It is quite tasty, with a lovely floral/citrus bouquet finishing with the slight bitterness of the gentian in the Suze.
 The owners of 18•21 Bitters suggested (via Twitter) naming it The Morning After because it starts sweet and ends in bitter regret or something, but then admitted they weren’t good at naming cocktails.