This is a little bit disturbing. A former United States Department of Agriculture scientist tells ABC News he grinds his own beef because 70 percent of the beef sold in supermarkets has "pink slim" in it.

What is "pink slime?"

“Pink slime” is beef trimmings. Once only used in dog food and cooking oil, the trimmings are now sprayed with ammonia so they are safe to eat and added to most ground beef as a cheaper filler.

The “pink slime” does not have to appear on the label because, over objections of its own scientists, USDA officials with links to the beef industry labeled it meat.

[ via ABC News ]