How do you make the ultimate cooling summer cocktail even more refreshing? By adding mint, then blending everything with crushed ice. Gradually adding the rum to the blender, and using granulated sugar instead of simple syrup, follows the long-standing practice of Cuban bartenders, or cantineros. “There’s a distinctive approach to texture in a lot of cantinero technique, and that’s how their blended Daiquiris have evolved,” says Manolito co-founder Nick Detrich.