Forget a mojito - if you want to impress someone with a swanky cocktail, pop down to the Movida nightclub and order a Flawless. It consists of a large measure of Louis XII cognac, half a bottle of Cristal Rose champagne, brown sugar, angostura bitters and a few flakes of 24-carat edible gold leaf. The piece de resistance is the 11 carat white diamond ring at the bottom of the cocktail. Just make sure you can foot the £35,000 bill.

