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Enfleurage could be compared to certain aspects employed in maceration, but is done in a slightly different way.
Glass plates in a frame (called a chassis) are covered with highly purified and odorless vegetable or animal fat and the petals of the botanical matter that are being extracted are spread across it and pressed in. The flowers are normally freshly picked before so encased in their fatty bed.
Time left in the fat on the chassis 
The petals remain in this greasy compound for a few days or a couple of weeks (depending on the botanic material used) to allow the essence to disperse into the compound, where the then depleted petals are removed and replaced with a fresh harvest of petals.
This process is repeated until the greasy mix is saturated with the essence, and needs to be repeated a couple of times until saturation is achieved.
When the mix has reached saturation point the flowers are removed and the enfleurage pomade - the fat and fragrant oil - then washed with alcohol to separate the extract from the remaining fat, which is then used to make soap.
As soon as the alcohol evaporates from the mixture you are left with the essential oil. This is a very labor-intensive way of extraction, and needless to say a very costly way to obtain essential oil and is nowadays only sometimes used to extract essential oil from tuberoses and jasmine.
To view further information on extraction methods in essential oil manufacture, please visit the following links
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