WYour luxury is not always apparent straight away. It's in an inconspicuous brown glass bottle at the Lengling perfume factory in Munich: Oud, a fragrance that gives perfume the touch of “A Thousand and One Nights”. A raw material so valuable that it can almost be worth its weight in gold. A kilogram costs a good 50,000 euros, which makes the essence one of the most expensive in the world – and a symbol of an industry that even the ongoing economic crisis has little impact on. On the contrary: the fragrance business is developing better than ever. Germans spent almost two billion euros last year, a record figure and twice as much as in 2009.