1 oz True Kola Syrup
2 oz milk
3 oz club soda
1.5 oz gin (optional)
Combine kola syrup, bitters, milk, and gin over ice in a highball glass and stir. Top with club soda and garnish with orange peel if desired.
Vintage glass in the photo courtesy of our friends at The Hour, a vintage and contemporary cocktail-ware company based in Alexandria, VA.