Makes 1 drink
2 ounces gin, such as Hendrick’s
1 ounce dry vermouth, such as Cinzano Bianco
3/4 ounces lime juice
1/4 ounce simple syrup
Splash of club soda
Lime wedge, to garnish
Combine all ingredients (except the club soda) with ice in a mixing glass or beaker. Stir to combine and chill ingredients.
Fill a Collins glass with ice and strain cocktail into glass.
Top with club soda and garnish with a lime wedge.