1 1/2 oz of Triple Sec
2 oz of Vodka
2 oz of Orange Juice
3 oz of 7-up soda (or Sprite)
1 1/2 oz of grenadine syrup
Shake vodka, triple sec and orange juice with ice. Strain into a cocktail glass and add 7-up (do not shake, stir). Layer the drink w/ grenadine on top.