Ash glaze is a type of glaze that can be applied to jugs, statues, large pots, and crafts made of stone or ceramics. It is applied to these items by a glazer at a kiln or magma kiln by using a bar of ash. Earthenware jugs and pots can be glazed to allow them to hold liquids.
Unlike tin glaze, the association between ash glaze and its source material is hardcoded into the game itself.
A large pot with an ash glaze.