Expeller Pressing

A process that is used to extract oil from fruits, nuts, and seeds. Expeller pressing is similar to cold pressing except that extreme pressure is added during the pressing. As much pressure as fifteen tons per square inch is applied to squeeze the oil from the fruit or seeds. The high pressure also produces high heat (as high as 300ºF) through friction, so the oils produced with the expeller process cannot be considered cold pressed. The oils obtained with this method retain much of their flavor, aroma, and nutritional value, but not to the extent of cold pressed oils.