Cosmopolitan is a classic cocktail, and probably one of the most famous.
- Pour all ingredients into a shaker.
- Fill the shaker with ice.
- Shake until cold.
- Strain into a cocktail glass.
- Garnish with an orange zest.
- Cut off a thin piece of the outermost peel of an orange.
- Squeeze the peel above the glass so that the citrus oils sprinkle over the drink.
- Rub the edges of the glass a little lightly with the orange peel before adding it to the drink.