KindGlazeFiringMid fire, Cone 5–6MakerSpeedball
Food safety depends on the clay, the application and your kiln. Treat any maker's claim as a starting point and test your own work before using it for food or drink.
Photo and details from speedballart.com.
From the supplier
LineSpeedball
On real work
No public pieces use this glaze yet. Log a piece with it and yours will be the first.
