Ted Neal - Porcelain TeapotTed Neal Indiana Porcelain, wood fired and reduction cooled, cone 10 Functional 6" w x 5" l x 7. 25" h About the Teapot While no glazes have been applied to the surfaces, I do utilize high iron slips and clays on the bisque surfaces. Each is then fired in a train style wood kiln in a process called reduction cooling. This process creates natural ash glazes common to most wood fired forms but also promotes the dark metallic surfaces by a controlled