Edible oil is extracted by expeller and solvent extraction method. Then the crude oil is refined to make it edible. The process involves in preparing the oil seeds for oil extraction is expelling / extraction by solvents and then refining it for human consumption. The process involves in the preparation of oil seeds for expeller / solvent extraction plant are cleaning of seeds, removal of stones, crushing of seeds, cooking of the seed grits, flacking, extruding expanding, drying and cooling. Now the seed is prepared for sending it to solvent extraction plant.