Cold-pressed juice is extracted through a cold press, otherwise known as a masticating juicer. This process eliminates the rotating blades of traditional centrifugal juicers, instead relying on a process resembling the human eating process.
Fruits and vegetables are fed into a tube that leads to an auger, which grinds and chews the produce to a paste. This paste is then forced through the remainder of the shaft, allegedly extracting more juice per piece of produce than the traditional centrifugal juicer.
Proponents of this movement claim the slower process, the lack of oxygen and the lack of heat (which is generated by the motor and spinning blades in a centrifugal unit) leaves more nutrients in the juice.
However, investigations into the validity of the nutrient density in cold-pressed juice have yielded few results.