Ash glazes are made from the ash of various kinds of wood or straw.
Porcelain is the non-porous option of ceramic. It is usually translucent, lighter in weight and thinner and has a delicate appearance. In addition, it has incredible durability.
Dehua Porcelain Ash-glazed Plate with Floral Pattern
Often made into finer items, porcelain can have many other materials mixed in with the kaolin clay - like silica, feldspar, quartz, glass, bone ash, and/or alabaster. These ingredients help to fortify the clay mixture and when fired produce a strong product which shares some qualities with enamel.