Cold-pressed oil is made from many foods, but on a small scale it is most often from seeds and nuts. This form of expressing oil from foods does not involve the use of chemicals. Instead, the oils are extracted by way of pressing on the food item at a temperature below 120 degrees Fahrenheit, within an expeller press. An expeller press is a screw-type machine that puts pressure on the food item and oil seeps out. This process allows the oil to hold onto subtle flavors that are otherwise lost at higher temperatures. The cold-pressed oil process can be achieved at home with a motorized or hand-crank expeller press.