This gizmo is like a little softball-sized boiler, which you put in the oven with your pan of stuffing, and it releases just the right amount of steam at the right intervals to make sure your stuffing comes out fluffy, but also with a crisply browned top.
It also, for some reason, has a little "OVERLOAD" button, and the metal casing is scored to produce maximum shrapnel. So that's weird.