Expeller-Pressed
An expeller press is a machine that presses seeds or nuts through a cavity and uses friction and pressure to extract oil. During this process, since the seeds are pressed using friction, heat is naturally created (around 140-210˚ F). Once the seeds are pressed, the oil is removed.
Cold-Pressed
When pressing seeds or other ingredients to create cold-pressed oils using an oil seed press, less heat is created. The seeds or ingredients are placed in the press and then are crushed by the machine to obtain the oil. Typically, when these ingredients are pressed, they produce a lower temperature (less than 120˚F) compared to an expeller press.