The Corning Ware Blue Cornflower 3 Liter Casserole A-3-B with Pyrex A-9-C Lid is a vintage piece of decorative cookware from the 1970s. Made of ceramic and featuring a blue cornflower pattern on a white base, this casserole is capable of holding 3 liters of food and is designed for use in electric and gas ovens. With a Pyroceram production technique, this original piece from the United States is a collectible item for those who appreciate classic kitchenware.