Abbysal devil gives 25 or 50 riddle papers, cant recall exactly xD
And you can get riddle papers on the great wall of china too.
And if i recall correctly was i not able to make the chicken thing with that ginseng, should try it out when i get my hands on some again.
http://wlodb.com/topics/928
here is a post i made about shotputs, amount of riddle papers from great wall quest should be there somewhere :)