Step 1:
Muddle the Berries and Basil:
In a cocktail shaker or a glass, muddle the frozen blackberries and basil leaves together. Muddling releases the flavours and juices from the berries and basil.
Squeeze Lime Juice:
Squeeze the juice of half a lime into the shaker or glass.
Step 2:
Add Bourbon and Sugar:
Pour in the bourbon and add 2-3 teaspoons of sugar, adjusting the sweetness to your taste.
Shake or Stir:
If using a cocktail shaker, add ice and shake vigorously. If not, stir the ingredients together with ice.
Step 3:
Strain and Serve:
Strain the cocktail into a glass filled with ice cubes.
Top with Soda Water:
Top the cocktail with 50ml of soda water for a refreshing effervescence.
Step 4:
Garnish:
Garnish the cocktail with a blackberry or a basil leaf for an extra touch of elegance.