called upon the USDA to institute mandatory labeling guidelines for ground beef sold in supermarkets, so consumers can make informed purchasing decisions. See also 2013 horse meat scandal Advanced meat recovery Ag-gag Animal product Beef hormone controversy Food libel laws Mechanically separated meat Reconstituted meat Transglutaminase Notes References Further reading Lewis, Al April 4, 2012. "Dude, people just don't want to eat pink slime". MarketWatch. Retrieved April 4, 2012. Greene, Joel L. (April 6, 2012). "Lean Finely Textured Beef: The "Pink Slime" Controversy". Congressional Research Service. Retrieved March 2016. External links Beef Products Inc. – official website "Have you ever used so-called 'pink slime' in your burgers?". McDonald's official website. "Do you use so-called "pink slime" or "pink goop" in your Chicken McNuggets?". McDonald's official website. Food and drink introduced in 2001 2012 controversies Beef Dysphemisms Meat industry 2000s neologisms 2002 neologisms Pejorative terms related to technology Cargill Ground meat Ethically disputed business practices