Ingredients
2 ounces (1/4 cup) fresh key lime juice (from 8 to 10 Key limes; or regular lime juice from 2 to 3 limes)
2 ounces (1/4 cup) light rum
2 tablespoons simple syrup
1 cup ice
Half a key lime, for garnish
Preparation
Combine lime juice, light rum, simple syrup, and ice in a cocktail shaker; shake well. Add more simple syrup to taste if desired. Strain into a chilled cocktail glass and garnish with half a key lime.
