Ingredients: (Makes 1 cocktail)
6 fat blackberries + more for garnish
8 mint leaves
1 oz rum
1 to 2 tbsp sugar
1/3 oz lime juice
2 oz club soda
In the bottom of your drinking glass, muddle/crush together blackberries, mint leaves, sugar/simple syrup, rum, and lime juice.
Add some ice cubes, then pour in club soda and stir.
Garnish with a few whole blackberries and a sprig of mint.