Pyroceram, a glass-ceramic heated material was originally developed by Corning Inc. in the 1950's to be used in rocket nose cones. ORIGINAL PYROCERAM® White Based Material. CorningWare® Limited Edition StoveTop™ 4-pc Just White Casserole Set contains: 2.1qt (2L) Casserole with Glass Cover & 3.2qt (3L) Casserole Dishes with Glass Cover.
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