Reading back through old TC posts, I stumbled across a claim that Yamada Sou adds iron oxide to his clay. I am curious if this is speculation based on color, or is something very obvious to the trained eye, or if it is mere hearsay that has not been corroborated. While I find his kyusu designs delightful, it would be a shame if iron oxide was added simply to create a deeper color!
I would love to hear more information on clay facts if anybody is at liberty or willing to share! Thank you again for all of the opportunities to learn!
![Smile :)](./images/smilies/icon_e_smile.gif)