My Affinity for Shino Glaze

After moving to New Hampshire in 2000, I took a ceramic course at the New Hampshire Art Institute (now part of the College of New Hampshire).  There I found a group of potters who introduced me to Shino glaze.

Shino glazes were used by Japan potters during the 16th and 17th centuries.  They were known for their characteristic warm earthy tones, speckled surfaces, and subtle crawling effects. Unfortunately, the recipe for the glazes faded away around the late 17th century and became lost.

Through extensive analysis of surviving Shino pottery scholars attempted to piece together the lost recipe. In the 1930s and 1940s, two Japanese potters, Toyozo Arakawa and Hajime Katō, developed the first modern Shino glaze by studying Momoyama Shino pots.

Working independently in 1974, Virginia Wirt, a student of Warren MacKenzie at the University of Minnesota, developed a glaze formula that emulated the characteristics of the Japanese Shino glaze.  Her glaze, which is now referred to as American Shino, helped introduce Shino to a wider audience.  

Once I discovered how the texture, color and finish of Shino glazes are a product of its application and firing process, I was hooked. Along with four other potters, I acquired a gas kiln for the express purpose of firing Shino glazes and letting the “kiln paint the pot.”  Wood-fired or gas kilns are required to fire Shino glazes. These kilns can be set to reduce the oxygen in the kiln so that the molecular composition of the glaze is changed during the firing.

Given the serendipitous nature of the glaze and firing, each Shino glazed pot is truly one-of-kind.  The shape of the pot might be able to be produced again, but the finished piece can never be duplicated.

Below is a teapot in a private collection.  It is a wonderful example of Carbon-Trapping Shino Glaze. The stripe on the spout of the teapot was created during the firing when carbon was present in the kiln at the exact moment the glaze was maturing and becoming the glassy coating of the finished piece.



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