When using a Cole and Mason Salt Mill always use Coarse Sea Salt Crystals.
If a salt mechanism has worn through in a short period of time, one of the contributing factors can be the use of Rock Salt. Rock Salt is very hard and abrasive and is not suitable for use in our mills. Although on many makes of Rock Salt packaging it will state that this type of salt is suitable for all grinders, this is not the case with Cole & Mason Mills.
Likewise, the use of Sea Salt Flakes is not recommended as this type of salt will coagulate within the mechanism and will cause the grinder to fail. Also do not use any type of salt that is of a ’moist’ consistency or texture ie French Sal de Mer, as this type of salt will also coagulate in the mill. All salt must be free flowing and kept in a dry atmosphere.