A good standard Cosmopolitan cocktail recipe comes from Ina Garten of the Food Network and calls for vodka, triple sec, cranberry juice and freshly squeezed lime juice. Variations on the recipe add orange twists or replace basic vodka with citron vodka.
To make Ina Garten's Cosmopolitan recipe, fill a cocktail shaker with ice. For four drinks, pour 1 cup of vodka, 1/2 cup of triple sec, 1/2 cup of cranberry juice and 1/4 cup of lime juice into the shaker. Close the shaker, and shake the drink well. Pour the cocktail through a strainer into four martini glasses.
The Perfect Cosmopolitan cocktail recipe offers measurements for a single serving -- 1/4 cup of vodka, 1 tablespoon of triple sec, 3 teaspoons of cranberry juice and 1 1/2 teaspoons of fresh lime juice. The method for mixing the cocktail is the same. However, after pouring the cocktail, peel a strip of orange peel over the cocktail so the orange essence sprays into the drink. Add the peel as garnish.
The Perfect Cosmo recipe calls for replacing the basic vodka with 3 ounces of citron vodka. The other change is that the recipe calls for rimming the glass with sugar. To do this, wet the rim with lime juice, and swirl it into extra fine sugar. This recipe also calls for garnishing the cocktail with a slice of lime.