Ingredient Amount
Gerstley Borate (or substitute) 5.05
Ferro Frit 3110 77.78
EPK Kaolin 7.07
Silica 10.10
Add Amount
Copper Carbonate 6.06
Bentonite 4.04


I thin down my glaze more than most. I haven’t experimented with putting it on thicker but I assume the results would be similar. My coffin kiln fires slightly cooler on the top so anything with this glaze sits higher. On the cooler side it comes out an ocean blue, on the hotter/more reduced side it gets to be a darker teal with red tones. 

This recipe was shared by Will Talbot in the May 2024 issue of Ceramics Monthly.