The vessels are coated in a fine terracotta glaze and are then left to dry in the sun. After drying, the surface is rubbed and polished by hand with semi-precious stones. It is this intensive polishing that gives its natural patina and sheen. the cookware is placed inside large earthenware vessels and fired in kilns. This process changes the terracotta surface two black Additional Details ------------------------------ Product description: The vessels are coated in a fine terracotta glaze and are then left to dry in the sun. After drying, the surface is rubbed and polished by hand with semi-precious stones. It is this intensive polishing that gives its natural patina and sheen. the cookware is placed inside large earthenware vessels and fired in kilns. This process changes the terracotta surface two black