Wald's Royal Icing is an extremely plastic, high quality English Porcelain Clay made popular by Kansas City potter, Deb Wald (featured images are some of her work!)
Check out this recent reel on her instagram featuring this clay:
https://www.instagram.com/reel/Cg2UGcbA4E8/?igshid=NDRkN2NkYzU=
Flint Hills clays have been evaluated by a nationally certified toxicologist, and have been found to be in compliance with ASTM C-1023 and D-4236, and to not contain any material in sufficient quantity to be toxic or to constitute a chronic health hazard when used responsibly.
