01 -
Fill a rocks or old fashioned glass with ice cubes.
02 -
Juice the lime until you have 30 ml of fresh lime juice.
03 -
Add the lime juice, white rum, dark rum, orgeat syrup, and Grand Marnier to a cocktail shaker.
04 -
Fill the shaker with ice, seal, and shake vigorously until the exterior feels frosty, approximately 20 seconds.
05 -
Pour the mixture through a fine mesh strainer into the prepared glass filled with ice.
06 -
Finish with a lime wheel, fresh mint sprig, or maraschino cherry as desired.