Glazed ham is a ham dish prepared using a glaze. French buttercream, and covered in a chocolate glaze. They are also served plain, with a crisp caramel glaze, iced, or with fruit. The result was the Palmer House Brownie with walnuts and an apricot glaze. It is biscuit-fired and painted with a glaze containing small amounts of iron. It is also used in a green glaze applied to pottery. It has a white slip with black slip decoration under a transparent glaze. Pieces made with a celadon glaze are themselves often referred to as "celadons". Many traditional confections use a sweet, thick miso glaze, such as "mochidango". However, the two organic pigments of the green glaze, indigo and weld, have faded. Maltose may be used to give char siu its characteristic shiny glaze. Decoration applied on top of a layer of glaze is referred to as overglaze. The latter is characterized by silver and copper nanoparticles dispersed in the glassy glaze. It acts as a flux, reducing the melting point of the glaze. Lead reduces this risk by reducing the surface tension of the glaze.