A cosmopolitan, cosmo for short, combines cranberry juice with vodka, lime juice and triple sec. I got my recipe from The New York Bartender's Guide. The lime juice supplies most of the flavor, the cranberry juice the color. My effort was a bit cloudy but the wife described it as lovely and asked for a second one so I guess it was a success. Cosmos took off in the late 1990s when they were prominently featured in the television sitcom, Sex and the City.