Pink slime (also known as lean finely textured beef or LFTB, finely textured beef, or boneless lean beef trimmings or BLBT) is a meat by-product used as a food additive to ground beef and beef-based processed meats, as a filler, or to reduce the overall fat content of ground beef. As part of the production process, heat and centrifuges remove the fat from the meat in beef trimmings. The resulting paste, without the fat, is exposed to ammonia gas or citric acid to kill bacteria. In 2001, the United States Department of Agriculture (USDA) approved the product for limited human consumption. The product, when prepared using ammonia gas, is banned for human consumption in the European Union and Canada.In March 2012, an ABC News series about "pink slime" included claims that approximately 70% of ground beef sold in US supermarkets contained the additive at that time. Some companies and organizations stopped offering ground beef with the product. "Pink slime" was claimed by some originally to have been used as pet food and cooking oil and later approved for public consumption, but this was disputed in April 2012, by both the Food and...