Essential oil is extracted from rockrose with the steam distillation process. The leaves are harvested and added into a recipient. A wood fuelled boiler, produces vapor, that is directed to pass through the leaves. The hot vapour dragging essential oil and other aromatic compounds is directed to a water cooler and condenses into a recipient. Oil is lighter than water and starts to accumulate on top. The process takes about 2 to 3 hours, after which the the oil is collect.