The next time you do a double take and challenge that over-priced bar bill in some swanky bar or nightclub, spare a thought for guests of one of London”s top nightclubs. Guest who really want to impress their partners can now fork out ”333 ” yes ”333 ” on the world”s most expensive cocktail at Umbaba. The Magie Noir has beat off the challenge of the Paris Ritz”s ”190 Sidecar with a blend of aged Cognac, vintage Dom Perignon and some Cr”me de Mure, whatever that is. Oh, and you get imported lemon grass, lychees, an aphrodisiac from West Africa and a 24-carat white gold cocktail pin. I should think so too, but I will still be sticking to a nice bottle of Stella thanks.