Amonia

http://www.wral.com/news/local/story/6970729/
http://www.snopes.com/food/prepare/msm.asp
http://www.good.is/post/chicken-nuggets-is-that-how-they-re-made-a-good-fact-check/
http://www.businessinsider.com/chicken-nuggets-are-made-of-this-pink-goop-2010-10