An auger is a component of a slow juicer and extractor that is responsible for the juicing process. It is a long, spiral-shaped device that rotates slowly to crush and squeeze the juice out of fruits and vegetables. The auger is a critical component of a slow juicer as it helps to extract more juice and nutrients from produce compared to other juicing methods. Unlike traditional centrifugal juicers that use high-speed blades to chop and extract juice, a slow juicer with an auger slowly crushes and squeezes the produce to extract the juice, resulting in less oxidation and better preservation of nutrients and enzymes. The auger is easy to clean and maintain, and some models even come with a self-cleaning function for added convenience.