I'm a potter by trade. I occasionally make a similar chicken roaster, but instead of the phallus thing I make a hollow cylinder. You fill the cylinder with a flavoring agent which cooks into the chicken as it's baking. You can use marinades, spice infused water, even beer. You can actually use the technique without having a special pot. Just pour your marinade into a beer (or similar) can, center the can in a roasting pan, and plop the chicken down on top of the can.