Carving Goose Eggs

I traveled to Provo, Utah last weekend to take a class on carving eggs. We were given goose eggs to work with and it was definitely different carving eggs instead of wood!

Latest Carving

It has been a slow Sunday and I got my hands on a sweet potato. I am told that they shrivel and look really cool after a few days. Has anyone ever tried this? Does anyone know what kind of finish to put on a sweet potato?

The Great Salt Lake Woodcarvers Show