Lucy Brennan's O Cocktail

Lucy Brennan's O Cocktail

Prep Time

10 minutes

Cook Time




An ideal cocktail for sipping on a warm summer evening. Read more about Lucy Brennan’s book here.

Why try? This was the cocktail all our chefs agreed was the best-tasting selection from Brennan’s cocktail “cookbook.” Crisp, refreshing with lovely orange flavor notes.


  • Cocktail ice cubes for shaking and serving
  • 6 fresh mint leaves
  • 2 ounces Cruzan orange rum
  • 1 ounce fresh lemon-lime juice*
  • 1 ounce simple syrup**
  • Splash of soda water
  • 1 orange slice for garnish
  • 5 lemons (for fresh lemon-lime juice)
  • 5 limes (for fresh lemon-lime juice)
  • 1/2 cup water (for simple syrup)
  • 1/2 cup sugar (for simple syrup)


  • 1 Fill a tempered pint glass one-fourth full with ice and add the mint leaves. Fill the glass with ice.
  • 2 Add the rum, lemon-lime juice, and simple syrup.
  • 3 Cap the glass with a stainless-steel cocktail shaker and shake vigorously for 10 seconds.
  • 4 Pour the drink and ice into a Collins glass.
  • 5 Top off with the soda water. Garnish with the orange slice and serve.
  • 6 *For Fresh Lemon-Lime Juice. Roll each fruit back and forth on the kitchen counter while pushing on the fruit to release the juices. Cut the fruit in half crosswise.
  • 7 Squeeze the juice into a medium bowl, using a handheld stationary juicer.
  • 8 Combine the juices in a glass container and shake to thoroughly mix.
  • 9 Cover and store in the refrigerator for up to 48 hours. Makes 10 ounces.
  • 10 **For Simple Syrup. In a small stainless-steel saucepan, combine the water and sugar.
  • 11 Stir with a wooden spoon over medium heat until the sugar has completely dissolved.
  • 12 Remove from the heat and let cool to room temperature.
  • 13 Pour the syrup into a glass bottle with a pour spout. Cap, refrigerate, and use as needed. Makes 7 ounces.



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