The term ‘salt glaze’ is seen used to refer to salt glazed stoneware and potteries. It is believed that the salt glazed stoneware originated during the 1400s in the Rhineland area of Germany.  Salt glaze is formed when salt is thrown into the kiln when it is very hot. The glaze is formed when Sodium in the salt reacts with silica from the clay body. The reaction produces a glassy coating of sodium silicate. It has a slight “orange – peel” appearance and is used to decorate the pottery. Salt glazed potteries may be found colorless or in various shades.