This purple gin cocktail by bartender Thor Slaughter as served at Bar Tartine features a fermented Concord grape soda that the bar makes with local organic grape juice. At home, you can use a good-quality grape soda like Boylan's in its place.
- 1 1/2 ounces Vivacity Native gin
- 3/4 ounce lime juice, freshly squeezed
- 1/4 ounce simple syrup
- 1/2 ounce Carpano Bianco vermouth
- Grape soda, chilled, to top
Add all ingredients to a shaker with ice and shake until well-chilled.
Strain into a cocktail glass.
Top with 3/4 to 1 ounce Concord grape soda.