This is a genuine Corningware RS4 round French white Ramekins bakeware bowl. This dish is versatile and stylish with its easy oven-to-table access, while still keeping a simple look to it. Fluted at the straight sides and slightly flared at the top, this dish is ready to go in the oven, microwave, refrigerator, freezer, and dishwasher. The Corningware Ramekin is made of non-porous ceramic that allows the dish to not stain, absorb odors, or discolor; making this dish last longer and keeping its elegant look.