This recipe is certainly silly. It says to separate the eggs, but it doesn't say how far to separate them - Gracie Allen
My Mommy’s was brass.

I don’t know if it was really made of brass, it could’ve been brass-plated or brass colored. I just remember it being brass. I had no idea what it was for, though I am certain that on several occasions, when my Jungle Jim became a Spaceship, that it was useful as some implement of an intrepid space explorer.
I’ve never purchased one myself, but there’s always been one in my kitchen. There’s one now - made by Tupperware. I’ve never used never used it.
An ex-girlfriend of mine once brought me back one as a gift from Britain. It was ceramic and interesting looking. I never used it for its intended purpose. Became a scouring pad dish as I recall. (That same girlfriend also ran my wok through the dishwasher when I was out of town. We didn’t last long as a couple).