This is a reprint of the post I did in Wildflower's "Pink Slime" thread:
I have some mixed feelings on this subject, but knowing what I do know about the meatroom and what is commonly done to ground meat, I really don't think this is a bad thing at all. You can easily characterize ALL ground meat as "pink slime" - I've certainly seen very very bad things done to ground meat as very commonplace practices, have been forced to do so myself to keep my job, and certainly know it will probably continue. Talking about bone dust - I have witnessed cutters very commonly scrape the bone dust with bone dust scrapers off of beef, pork, veal, lamb and ham cuts which 'should' be tapped into the bone can but are instructed to tap into the trim bucket instead, adding those few more ounces to the ground meat lug to get processed into ground meat. And you and I have eaten it for many many years without knowing it. Talk about your 'pink slime'... the stuff added and sanitized properly into ground meat now is a jewel vs what has been put into ground meat for many many years previous. Regrinds frozen and chunked up on the saw months later and mixed in. Old lamb and pork trimmings, on the verge of spoiling, mixed in on a Saturday morning grinds because 1) big ground meat sales on a weekend, so it won't stay in the case long because it will quickly deteriorate, and 2) on Saturday, retail inspectors don't work weekends so they can't randomly test ground meats for non-conforming additives or adulteration. Practices like that make all ground meat 'pink slime' more than you know.
This, however, is fresh trimmings that is wholesome and processed to be safe. Bottom line, it won't hurt you, whereas local, in-store practices done for years and years will make you sick. You think what you're getting out of the in-store grinder is good, but I will tell you, underhanded practices solely to enhance the bottom line are always present and a temptation for less-than the highest standard meat manager. It was always a conflict for me and once becoming a manager, it was even worse. I'll still favor 1, 3 and 5 lb. manufacturer's chubs over in-store ground meats any time. That is my bottom line, other than grinding it yourself; but... you cannot duplicate the 99.9% bacteria-free environment in your kitchen that they can in a processing plant, so even your own ground meat is more contaminated than the chubs. Grind a lb. of meat and refrigerate it and see how long it takes for it to turn brown; probably 24 - 48 hours. Packaged chubs have a 45 day shelf life.... if they contain 'pink slime', at least it is bacteria-free pink slime and still healthy.