70 Percent of Ground Beef at Supermarkets Contains ‘Pink Slime’

70 Percent of Ground Beef at Supermarkets Contains ‘Pink Slime’: Gerald Zirnstein grinds his own hamburger these days. Why? Because this former United States Department of Agriculture scientist and, now, whistleblower, knows that 70 percent of the ground beef we buy at the supermarket contains something he calls “pink slime.” “Pink slime” is beef trimmings. Once only used...

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