Toxic seeds, such as "Cycas media" and Moreton Bay chestnut, are processed to remove the toxins and render them safe to eat. Many foods are also baked in the hot campfire coals, or baked for several hours in ground ovens. "Paperbark", the bark of "Melaleuca" species, is widely used for wrapping food placed in ground ovens. Bush bread such as "Johnny cakes" were made by males using many types of seeds, nuts and corns to process a flour or dough. Some animals such as kangaroos, were cooked in their own skin and others such as turtles, were cooked in their own shells.