Step 1.
- In a mixing glass, add blackberries and mint leaves.
Step 2.
- Muddle gently to release the juices and oils without tearing the mint too drastically.
Step 3.
- Add gin and simple syrup to the mixing glass.
Step 4.
- Fill the glass with ice and stir well to chill the mixture.
Step 5.
- Strain into an Old Fashioned glass filled with fresh ice.
Step 6.
- Garnish with extra blackberries and a sprig of mint.