1/2 oz of Vodka
4 oz of sprite soda
1/2 oz of parfait amour orange liqueur (or orange liqueur)
Pour the vodka and parfait amour into a cocktail shaker half-filled with ice cubes. Shake well, and strain into an old-fashioned or rocks glass half-filled with ice cubes. Top with Sprite, to taste. Stir, and serve.