Drawbacks to forged iron are that it rusts, stains and becomes pitted when uncovered to air, moisture and sure meals. A spherical baking dish with shallow slanted sides which might be 1 to 1 half inches deep. The most typical sizes being 8, 9 and 10 inch diameters. They may be found made from many various materials, such as aluminum, glass, stoneware, ceramic, and tinned steel. Pie plates are used to bake single crust and double crust pies. They are also available in a deep dish variety that has slanted sides which might be 2 to 2 half of inches deep and range from 9 to eleven inches in diameter.