This is the best recommended ceramic salt mill that will grind our moist Celtic Sea Salt® brand salts. With a hardness rating close to that of diamond, the ceramic grinding mechanisms make short work of Celtic Sea Salt® Brand, peppercorns, herb blends, and even some seeds. The unique upright design prevents spilling on counter tops, is simple to refill, and makes it easy to judge how much salt to grind over food or for recipes. Just grind with the lid closed, then remove the top to measure the required amount. The grinding mechanism is made from an advanced ceramic close in hardness to diamond. It will never rust thus provides ultra-long- life performance.This mill produces an adjustable grind fine to coarse. Grinder comes empty. Use with Coarse Celtic Sea Salt.