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• In fact, the beef filler had been used for decades before the nickname came about. But most Americans didn't know -- or care -- about it before Zirnstein's vivid moniker was quoted in a 2009 article by The New York Times on the safety of meat processing methods.
• Soon afterward, celebrity chef Jamie Oliver began railing against it. McDonald's and other fast food companies later discontinued their use of it. And major supermarket chains including Kroger and Stop & Shop vowed to stop selling beef with the low-cost filler.
• Bettina Siegel, a food blogger who posted an online petition asking the USDA to stop using the filler in school lunches, said the controversy isn't based on the term alone. She said consumers are just upset that the filler is not what they think they're getting when they buy "100 percent ground beef."
• But Siegel acknowledges that the name doesn't hurt her cause, either. She said

the term "filled a vacuum" in the public arena about the filler; her petition, "Tell the USDA to STOP Using Pink Slime in School Food" had more than 200,000 signatures within a week.
• Beef Products, which makes the filler, blames its plant closings on what it calls unfounded attacks. About 650 jobs will be lost when plants in Amarillo, Texas, Garden City, Kansas, and Waterloo, Iowa close on Friday. Another plant in South Sioux City, Neb., will remain open but run at reduced capacity.
• Still, the company, based in South Dakota,

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