The standard recipe for a Cosmopolitan, with Vodka, triple sec, cranberry juice and lime juice.
2 oz Vodka
1 oz Triple sec
1 oz Cranberry juice
1/2 oz Lime juice
Combine ice, vodka, triple sec, cranberry juice and lime juice in a cocktail shaker and shake well.
Double strain mix over ice in a large cocktail glass. Garnish with a lime wheel.