When the flowers are removed from the chassis and the fragrance saturated fat is scraped off, to be extracted with alcohol, there still remains not only a certain amount of fragrant fat on the removed flowers, but some odorous matter is still contained in these flowers themselves. In order to isolate and concentrate this matter, the flowers are extracted with a hydrocarbon solvent, usually petroleum ether. The petroleum ether extract is evaporated and the evaporation residue is extracted with alcohol. In turn the alcohol is removed from this extract and what is left is called Jasmin Absolute from Chassis. This is actually a byproduct of the enfleurage process and the annual amount of available chassis absolute is obviously very small.