2. Connect the condensing device with the flask, connect the hose of the water inlet and the water outlet, and connect the flask to collect the volatile rose liquid.
3. Heat the 500ml flask with electricity, and keep the medium heat after the water is boiled. During this period, the color of rose petals will gradually fade, and liquid will drip out at the end of the condenser.
4. After waiting for a long time, the end criterion is that no liquid drops out of the condenser outlet, but all distilled water drops out.
5. After distillation, a large amount of liquid should be collected in a collection bottle. After standing for one night, the essential oil has been separated from the distilled water. The upper essential oil needs to be extracted with a needle, because the amount is too small to be extracted easily, while the lower one is what we usually call rose pure dew, and the whole process of making rose pure dew is over.