After several years' research and development, we choose steam distillation extraction method to produce ginger oil as it is safer because there is no solvent used but pure water as the main component. The dried ginger is grinded into powder in advance. Then, the steam produced in the boiler will be supplied into the vessel, which contains water and ginger powder. The steam will contact to the ginger powder and force ginger oil out. After a while, water vapor and the distilled ginger oil are recovered in a different water cooler and condenser. These two separated mixture occurs because of difference in density. The distilled water leaves from downside, while the ginger essential oil is collected at the top of the condenser. Then this ginger essential oil is sent back to the vessel by means of second distillation to recover the soluble components of the ginger oil.