Frit and glaze companies at international database of the ceramics industry and pottery artszibo hinon glaze co., ltd, bubun ceramics, china materials limited, zibo jinming glaze co.,ltd, etc. industrial ceramics and pottery directory search Nothing is quite so tempting as glazed donuts or sweetbread topped with glaze icing. glaze icing looks and tastes wonderful, drizzled over cakes, squares or sweet breads. it is a different method to ice sweet treats. knowing how to make it will serve you well in turning out great-tasting desserts. White stoneware clay, fine-grained clay body on top of a coarse clay body. pushing the clay from within allowed a characteristic voluminous form and stretched structure to arise. alkaline frit-based glaze with manganese oxide. the low viscosity of the glaze clearly reveals all the details in the body underneath.