1 1/2 oz of grand marnier orange liqueur
2 oz of Vodka
2 1/2-3 oz of club soda
2 1/2-3 oz of Orange Juice
Put Vodka and Grand Marnier in a shaker with ice. Shake and strain into collins glass. Add ice and fill with equal parts of OJ and Soda. Stir and granish with orange slice.