The earliest salt and pepper mills were developed in wood and used traditional metal grinders. Today the mill market is quite diverse with mills made from steel, acrylic, porcelain, marble and of course wood. Traditional grinders made from a variety of metals can still be found in many mills, but salt mills will usually have plastic mechanisms to avoid corrosion. However the use of ceramic is rapidly expanding. As mentioned above the use of high tech ceramic mechanisms is becoming increasingly popular. T&G now lead the way with all of our peppermills incorporating ceramic grinding mechanisms. Ceramic mechanisms are ideally suited to grinding peppercorns as they are harder than metal and also will not corrode or oxidise food. Our salt mills contain a mixture of ceramic and hard plastic, again to avoid corrosion. While peppermills with a metal mechanism can only be used for grinding peppercorns, T&G's peppermills can also grind salt, pepper and whole dried herbs and spices.