The delicate rose flowers are processed immediately. After weighing again, they are placed in the copper stills, and mixed with about 500 litres of demineralized water. The rose-watermixture is heated with steam at a pressure of 1 bar. The steam takes up the fragrant constituents of the rose flowers, rises and is led into the so-called condensing coil where it is cooled by a copper spiral. The resulting condensation product collects on the floor of the still in the form of a milky fluid called the "first water". This contains about 25 to 30 g "green oil" (from about 450 kg rose flowers) which is produced in this first distillation.

The green oil is the most concentrated, that is the most valuable form of the essential oil of rose and has an intensive aroma of fresh flowers. The remaining "first water" is re-distilled. From about 1600 l first water a further 75 kg "yellow oil" are obtained, a slightly less concentrated oil with a slightly less intense rose aroma. It is decanted together with the green oil and then filtered. The end product is the valuable oil of rose or attar of rose which is highly sought after for the production of perfumes and Skin Care products.