You could always add sugar, but more likely the sweeter one contained more
Tiple Sec/Countreau/or Gran Marnier ... which are sweet orange flavored
liquers.
The ingredients to a Cosmopolitan are
Vodka
Triple Sec
A splash of lime juice
and cranberry juice
You will want to be more liberal with the Triple Sec when you decide what
proportions to mix with. Sorry I don't have oz. for you, I free pour my
drinks. If you want I am sure someone has some numbers for you.
--
J.C. Pitts
mailto:BSU_Bartender[at]msn.com