Cosmopolitan (serves 1)
1.5 fluid oz vodka (my favorites are Tito's, Grey Goose, and Valentine)
1/2 fluid oz Cointreau
1.5 fluid oz cranberry juice
juice from 1/4 lime
Pour everything into a shaker with lots of ice. Shake and strain into a chilled martini glass. Garnish with a lime twist or wedge, if desired.