Highly concentrated and aromatic the oil mixture is extracted from the plant. Essential oils can typically be produced through steam distillation whilst absolutes require the use of solvent extraction techniques and enfleurage.
This solution is filtered and concentrated by distillation to produce a waxy mass called concrete. The lower molecular weight, fragrant compounds are extracted from the concrete into ethanol. When the ethanol evaporates, an oil (the absolute) is left.
This leads to high quality extraction without altering the plants natural scent or compound and because it takes very little heat compared to steam distillation it does not alter the characteristics or scent of the oil and is thus preferable for high end oils such as Rose and Jasmine.
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