1 shot orange liquor, such as Cointreau
1 shot cranberry juice
Juice of 1/2 lime
Long, thin piece orange zest
Fill a cocktail shaker with ice. Add the vodka, Cointreau, cranberry and lime juices. Cover and shake vigorously to combine and chill. Strain into a chilled martini glass. Twist the orange zest over the drink and serve.