The term Saggar refers to a container used around a pot during the firing process. I start with a polished, bisque fired pot so that the finish is shiny and able to accept the treatment.  I apply an acid wash on the surface of low fired pottery.  I then add salts, salt washes and natural fibers wrapped up against the pot with aluminum foil as a container. The pieces are then fired to between 1250°-1400° Fahrenheit. The process captures the chemical reactions between the acid and the salts in the porous ceramic surface. If any smoke is released from the fibers included in the package, it will get trapped in the pot as gray or black marks. The finished result is a flowing blend of beautifully mottled reddish earth tones.