3 to 4 sprigs of spearmint
1/4 lemon (cut up into 2 or 3 pieces)
In a mixing glass, add the mint and lemon.
Muddle thoroughly to release the juices and oils.
Add simple syrup, whiskey, and fill the glass with ice.
Shake vigorously for 30 seconds.
Strain into an old-fashioned glass filled with crushed ice.
Garnish with a mint sprig. Serve and enjoy!