... small white star-shaped flowers, which are picked at night, when the aroma is most intense.An experienced picker can pick 10 ... -15,000 blossoms per night.Originally from China and Northern India, it was brought to Spain by the Moors, with France, Italy ... an 'absolute' is obtained from the concrete, by separation with alcohol. The essential oil is then produced off the absolute by steam distillation.1 ...