Expeller pressed oil is often very similar to cold pressed oil in that neither involves the use of any chemicals, though the processes involved in each are slightly different. Cold press methods also use an OIL EXPELLER machine, but only in a temperature-controlled setting. When the machine’s plates rotate and press the target object, a certain amount of heat is generated through friction, which the cold press method seeks to minimize.
Cold pressed oil is most common for things that have a very delicate flavor that can be disturbed by excessive exposure to heat. Certain extra virgin olive oils are made this way, as are many grapeseed extracts.