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'Pink slime' in burgers? A taste test.

'Pink slime,' a mix of leftover beef parts added to ground beef, is creating a stir among food activists. So how does a pink slime burger taste? 

By J.M. HirschAP Food Editor / March 16, 2012

A hamburger made from ground beef containing what is derisively referred to as 'pink slime' (right) gets compared to one made from pure 85 percent lean ground beef on March 15, 2012 in Concord, N.H.

Jim Cole/AP

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All the angst over "pink slime" has made one thing clear: We don't always know what we're getting when we bite into a big juicy hamburger.

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Which leaves unanswered some of the most basic questions in the debate over what the meat industry calls lean finely textured beef, a processed meat filler that experts say has found its way into much of the ground beef consumed in the United States.

But as a professional eater, I needed to know two things: What does this stuff do to the taste and texture of ground beef? And how can consumers know when they're eating it?

Neither answer came easily, the former because of the sheer volume of beef I needed to eat, the latter because of the rather opaque way ground beef is made.

For schools, that opacity began to clear Thursday, when the U.S. Department of Agriculture announced that as of the fall the National School Lunch Program will allow districts to choose ground beef that does not contain the product. Previously, it was difficult for schools to know whether the beef they bought from the feds had it or not.

That's because pink slime — no matter what you call it or what you think of it — really is made from beef and therefore doesn't need to be listed as a separate ingredient.

But Thursday's announcement doesn't do much for the average American consumer.

At the grocer, a steak is a steak, and it is nearly always labeled by the cut of beef it's from. There was a time when ground beef was similarly labeled and you knew at least roughly what part of the animal you were getting. And though some packages still indicate "ground chuck" or "ground sirloin," today most is labeled simply as "ground beef."

Most consumers don't care. They'd rather focus on another part of the label — the fat percentage. And producers don't care. It has made it easier for them to take a more amalgamated approach to ground beef, using whatever cuts they want or have without worrying about spelling it out.

Now introduce lean finely textured beef, and the meat picture is further muddied.

The product is made from bits of meat left over from other cuts. It's heated and spun to remove the fat, then compressed into blocks for mixing into conventional ground beef. Because it's so lean and inexpensive, producers often mix it into fattier meat to produce an overall leaner product.

That means two packages labeled "ground beef 80 percent lean" may look and sound the same but be composed of different meats. One could be unadulterated ground beef made from cuts of meat containing 20 percent fat. The other could be made from poorer quality — much fattier — meat but cut with and made leaner by pink slime, a term coined by a federal microbiologist grossed out by it and now widely used by critics and food activists.

How do you tell the difference? For the most part, you don't.

"You can't differentiate beef from beef," said Jeremy Russell, a spokesman for the National Meat Association, which represents processors, suppliers and exporters. "Talking to your retailer would be the only way."

So that's what I did. But it got me only partial answers.

At grocer No. 1, the folks behind the butcher counter were able to show me one brand, a pricy "all-natural" ground beef that did not contain the meat filler. But for the many other and far less expensive varieties of ground beef? They had no way of knowing.

Grocer No. 2 presented the opposite problem. The workers there found one brand that definitely did have the pink stuff, but they couldn't say whether any others did or didn't.

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