can cooker users - anyone, anyone?

Francesca,

I "cook in the can" on top of my oil filled radiator.

Any pot with a tight fitting lid will do the same thing.

I have never seen one in person. Read the description on Amazon. I'm not quite sure, other than volume how a can cooker is better/different than a pressure cooker. I'll be anxious to hear other poster's experiences.

The only "can cooker" method I know about is the one by which you cover an unopened can of whatever with water and bring it to a boil. Let 'er simmer for a few minutes, always making sure the can stays covered with water. Them remove from heat, open the can, and voila! whatever's in the can is hot. No muss, fuss, or pans to wash.

Is there something different out there now?