In the Iberian palaces, the trend is for the use of a new essential oil with floral, fresh and fruity notes of the sour orange tree. This strange habit owes it to the French Anne-Marie Orsini, Princess of Nerola. The flowers are picked, most often by hand, in late April to early May. The essence is produced by steam entrainment because the flower is too fragile to withstand distillation. Its low yield still makes it a rare and precious ingredient in the Perfumery today.