Squash Yellow is a yellow orange underglaze that holds its color at cone 6 and lightens at cone 10. Squash Yellow will fire matte unless a clear gloss is used on top.
1st image is cone 06
2nd image is cone 6
3rd image is cone 10
Tableware producers must test all finished ware to establish dinnerware status, due to possible variations in firing temperature and contamination.