2 dash Sweet Vermouth (1 oz Cocchi)
2 dash Creme de Cassis (1 bsp G.E. Massenez)
1 dash Orange Bitters (Regan's)
Stir with ice and strain into a cocktail glass. I added an orange twist.
After the Tequila Zoom, I stuck with the cocktail time era and reached for Pioneers of Mixing at Elite Bars: 1903-1933 to find another quirky original. There, I spotted the Marblehead which I envisioned as a Martinez with cassis instead of Maraschino as the liqueur. Thus, I opted for a Martinez-like structure and made it more sweet vermouth forward. In picking a gin, I wanted to focus on the black currant notes and selected Beefeater Summer since the fruit is in the botanical mix (despite it being anything close to summer here).