Prepare creamy polenta, smooth hollandaise or perfectly melted chocolate using the RSVP Endurance 1-Quart Double Boiler. Features a top insert pan with curved sides that allow smooth mixing and blending while the heavier bottom pan features an encapsulated tri-ply base for quick, even heating. Both pans are made of stainless steel. The fully tempered glass lid is oven-safe to 450 F and fits both the upper insert and the bottom pan.