A method of de-oiling potato slices, which have been coated in oil, the steps of the method including providing a plurality of potato slices that were pre-treated in oil； and randomly feeding the potato slices onto an elongate longitudinal conveyor which is permeable to oil, water and air. Further, the method includes spraying water downwardly and upwardly onto the plurality of potato slices on the conveyor to displace and lift surface oil from the potato slices. Then, directing air blades to blow a mixture of oil and water from the potato slices as these move along the conveyor.
