All L’OBJET collections are made with exceptional materials, and with proper use and care, will last for generations. Clean with salt. It is easy t o clean the grinder for residue - simply by grinding coarse salt. This will clean the ceramic grinding stone built into the grinder, as well as the removable ceramic cone. Clean with a brush or water. For a more thorough clean we recommend to clean the grinder by turning the grinder forth and back while keeping the grinder up-side-down. Ceramic parts need to dry completely, for at least 24hrs, before mounting and grinding again. When needed, L’Objet wood pieces may be handwashed with cool water with a non-abrasive soap using a soft sponge. Always dry immediately with a soft cloth. Wood pieces are not dishwasher, oven, or microwave-safe.