Muddle mint and brown sugar. Add Singani 63 and lime juice and shake with ice. Pour into a highball glass and fill with ice. Top with club soda, bitters and mint.
A
2 oz. Singani 63
B
Juice of Half a Lime
C
Handful of Fresh Mint
D
.75 oz. Brown Sugar
E
3 Dashes Angostura Bitters
F
Club Soda
