Many customers of Seven Grains have questions concerning the difference between Expeller Pressed and Cold Pressed Oils. Expeller and Cold pressed are two similar methods of extracting oil from nuts or seeds. Expeller pressing is a mechanical, chemical-free extraction process. No external heat is used during expeller pressing, but the temperature of this process will vary depending on the hardness of the seed or nut. The pressure that is needed for harder nuts or seeds causes more friction and heat.
An oil that has been cold pressed has gone through the expeller pressing process while the temperature was controlled and kept below 120 degrees F. The cold press process will often be used on delicate oils, to maintain flavor, and to maintain nutrients.