ABC News has the learned that on Thursday the U.S. Department of Agriculture will announce that starting this fall, schools will be able to choose whether or not they buy hamburger that contains lean finely textured beef known as " pink slime."
However, the substance, critics said, is more like gelatin than meat, and before BPI found a way to use it by disinfecting the trimmings with ammonia, it was sold only to dog food or cooking oil suppliers.
http://news.yahoo.com/pink-slime-choice-schools-230530972--abc-news.html