http://rspb.royalsocietypublishing.org/content/282/1809/20150229 http://rspb.royalsocietypublishing.org/content/282/1809/2015... See also the 'Figures & Data'

http://rspb.royalsocietypublishing.org/content/282/1809/20150229 http://rspb.royalsocietypublishing.org/content/282/1809/2015... See also the 'Figures & Data' tab for some drawings and videos. The cooking 'device' is just two nesting plastic bowls with a piece of cooked food hidden in it.