Multifunctional mill: This ultra-thin mill is suitable for crushing all types of dry matter, including grains, spices and herbs such as rice, soybeans, coffee beans, corn, wheat, salt, pepper, cumin...Note: Material to the grinder must be sufficiently dry.Stainless steel material: The condiment of the whole grinder, it is made of high quality stainless steel and meets food safety requirements.Cleaning: The grinder is not effective and therefore cannot be cleaned directly with water. You can use a cleaning brush to remove any remaining dust from the jar, and then wipe the inside of the jar with a dry cloth.Replace the blade: Make sure the material to be sharpened covers the long blade, no more than 2/3 of the container, so that the blade has room to rotate while it is sharpened. You are advised to use it for a maximum of 3 minutes.