Now don't be snooty until you've tried it. Easy to make and tastes great.
The Cosmopolitan is usually served in a large cocktail glass, also called a martini glass.
Mix 2 (30ml) or 3 parts vodka (citrus is best), 2 parts cranberry juice, 1 part triple sec (Cointreau is best), 1 part lime juice.
The cranberry mainly adds colour and should not excessively dilute the drink.
A lemon twist is sometimes used to garnish.
That's it you're good to go.
Next up I reckon has to be the Mojito.