Cake Boss Countertop Accessories Stainless Steel 1-1/2-Quart Double Boiler Double Boiler Made of durable stainless steel, with an impact-bonded pan base featuring a layer of aluminum that allows the pan to heat quickly and evenly A double-walled interior water chamber is easily filled through the top of the handle using the included funnel The double boiler is designed with a water level indicator window on both sides of the handle and it even whistles when water needs refilling Comfortable handle and flared rim; a great addition to many other pieces in the Cake Boss collections