CorningWare manufactures nine distinct ceramic stoneware bakeware collections. With some restrictions, home chefs can safely microwave CorningWare's SimplyLite, French White, Casual Collections, Creations, Colours, Traditions, Ryku, ScandiaWhite, and Portables dishes. For best results, follow specific care instructions printed on each dish's underside.
Extreme temperature shifts may fracture CorningWare products. For this reason, do not use CorningWare dishes to heat prepackaged convenience foods or microwave popcorn. These items typically contain special browning wrappers that generate excess heat.
Some microwave convection ovens feature built-in browning elements designed to crisp food. To prevent potential breakage, never use CorningWare in conjunction with a browning feature. Also avoid heating an empty or partially-filled CorningWare dish; choose CorningWare dishes which appropriately accommodate food quantity.
Soaking a CorningWare dish in water for long periods may negatively impact the product's ability to withstand repeated microwave use. Do not microwave CorningWare Portables carrying cases or CorningWare SimplyLite Bamboo Servers.