Add the mint leaves, blackberries, and agave syrup to a cocktail shaker. Using a muddler or the handle of a wooden spoon, muddle the ingredients until the mint is fragrant.
Add the ice cubes, rum, and lime juice. Cover and shake vigorously to chill.
Fill 2 rocks or highball glasses with crushed ice and strain the liquid into the glasses. Top with club soda and garnish each with a slice of lime.
Reprinted with permission from Bobby Flay's Barbecue
Bobby Flay, a New York Times bestselling author, is the chef-owner of six fine-dining restaurants, including Mesa Grill, Bar Americain, and Bobby Flay Steak, and numerous Bobby's Burger Palaces. He is the host of many popular cooking shows on Food Network, from the Emmy-winning Bobby Flay's Barbecue
Addiction, Grill It! with Bobby Flay, and Boy Meets Grill, to the Iron Chef America series, Throwdown! with Bobby Flay, and Food Network Star.
