Based on the Spearmint recipe in John Britt's book "Mid-Range Glazes", adapted to materials sourced from CTM Pottery Supplies.
| Material | Ratio |
| Nepheline Syenite | 4 % |
| Flint | 17 % |
| Ferro Frit 3134 | 23 % |
| Wollastonite | 28 % |
| Grolleg China Clay | 28 % |
| Rutile | 6 % |
| Copper Carbonate | 4 % |
| Bentonite | 2 % |