2 ounces rum
1 ounce Cointreau
1/2 ounce lemon juice
Shake with ice, strain into a cocktail glass.
Source: Jeff Berry

Sour style cocktails are some of the most popular in the world: Margarita, Sidecar, Daiquiri, to name a few. Take a spirit, add juice from any citrus and a sweetening agent like simple syrup or your favorite liqueur and you have a sour style cocktail. This is essentially what Jeff "Beachbum" Berry did when he invented the Outrigger. Based upon the Sidecar, Jeff says this about his creation,"as with cognac in a Sidecar, the older the rum you use in the Outrigger, the better it tastes!"