Salt fired porcelain cup with iron oxide brushed in and a red slib dip. Small s crack in the bottom. Can still be used daily.
What is salt firing in ceramics?
Salt firing is a vapor-glazing process where salt (sodium chloride) is introduced into kiln firebox at high temperature. The salt vaporizes, and sodium vapor combines with silica in clay surface, forming extremely hard sodium-silicate glaze.
9,5 cm wide and 5 cm high.
