1 1/2 oz of white rum (or Light Rum)
1/2 oz of Triple Sec
1/2 oz of grenadine syrup
1 oz of sweet and sour mix
Pour white rum, triple sec, grenadine and sour mix into a cocktail shaker half-filled with ice cubes. Shake well. Strain into a sugar-rimmed cocktail glass, garnish with a slice of lime, and serve.