Marionberries, an exceptionally juicy, slightly tart blackberry variety developed by Oregon State University, are perfect for this fizzy summer refresher. You can also use regular blackberries.
1/2 cup fresh mint leaves
3 tablespoons sugar
4 ounces marionberries or blackberries (about 1 cup)
1 cup ice cubes
1/2 cup white rum (such as New Deal Distillery)
2 tablespoons fresh lemon juice
2 tablespoons fresh lime juice
1 cup club soda
Additional marionberries and mint sprigs (optional)
How to Make It
Combine 1/2 cup mint, sugar, and 4 ounces marionberries in a cocktail shaker; mash with a muddler or wooden spoon until berries are broken down. Add ice cubes, rum, and juices to shaker; seal. Shake vigorously for 10 seconds. Strain mixture evenly into 4 glasses filled with ice; top each with 1/4 cup club soda. Garnish with additional berries and mint, if desired.