Step 1

In a large glass jar or shaker, add the blueberries, blackberries, rosemary and maple syrup. Using a pestle muddle the berries and rosemary.

Step 2

Add the ice, lemon juice and gin. Place a lid on top and shake for about 30 seconds to mix and chill the liquid.

Step 3

Strain out pulp and pour into cocktail glasses filled with ice, half way and fill the rest with sparkling water. Garnish with fresh or frozen blueberries and blackberries and a slice of lemon. Salut!