Straw fire is when an already kiln-fired ocarina is put inside a fire-proof container and fired again with combustable straw.  The smoke from the fire makes organic designs and rich woodsy color on the surface of the ocarina.  The ocarina is then polished with an organic lacquer which comes from certain trees.  Camphor oil is used to thin the lacquer.  There are a very small number of individuals who have reported allergic reactions to the Straw Fired ocarinas.  If you think you may be allergic to lacquer, or camphor oil, please choose a different ocarina.