1 oz of white rum (or Light Rum)
1/2 oz of coconut rum
1/4 oz of Triple Sec
3/4 oz of Lime Juice
1/4 oz of orgeat syrup (or almond syrup)
1/4 oz of yellow chartreuse (or chartreuse)
Shake, strain into an old-fashioned glass three-quarters filled with broken ice, and serve.