A saggar is a sealed container in which pieces are fired. This container can be a clay container, a cardboard box wrapped in clay, a tin or aluminium foil.  The piece is surrounded by combustibles and other items such as sticks, timber, sawdust, seaweed, horsehair, plants, coffee grounds, egg shells, poppy seeds, banana skins, copper wire – any number of items.  Ferric Chloride can be used to produce pinks, oranges and sometimes reds.  The combustibles eventually catch fire and the process starts with the heat being turned off between 700 and 800 degrees.  The pots are generally burnished and as there is no glaze, the outsides are usually smooth and matt