The crusher can grind salt crystals or peppercorns. Just unscrew the knob and remove the top, fill and replace the knob. The tighter the knob, the coarser the grind.
RAW Design uses the highest quality mechanism available. Stainless steel and non-corroding materials are used, and because of the quality, it will not jam or wear down. This is not only useful, it is a work of art!