Before using, wash your new CORELLE dinnerware with soap and water to remove the clear protective coating.Use CORELLE dinnerware for warming, baking and reheating food in microwave oven or preheated conventional and convection ovens. To warm empty dinnerware for serving, use preheated conventional or convection oven only.CORELLE dinnerware can be washed in an automatic dishwasher. Load dishwasher carefully to avoid glass-to-glass contact and bumping against other items during cycle.Oven must be preheated before inserting dish. DO NOT insert dish into oven for cooking or reheating until the oven has been preheated to the desired temperature.Add liquid to the bottom of dish when cooking certain foods. When preparing foods that may release liquid, add a small amount of liquid sufficient to cover the bottom of the dish prior to cooking.