Whether grinding salt or pepper, mills are incredibly easy to use. First, fill the mill with either coarse salt or whole peppercorns. Make sure to use the product the mill is supposed to dispense. Not all pepper mills can use salt, and vice versa.
Adjust the grind coarseness to the desired texture. Typically, loosening or tightening the knob at the top of the mill will ensure a larger or finer grind, meeting your customers' preferences. To allow easy tightening adjustments to create the finest ground seasonings possible, turn the unit upside down before tightening to eliminate the opportunity for peppercorns to catch inside the mechanism that prevents a complete closure.