We’ve reported on the "pink slime" that is sometimes added to hamburger meat. It turns out there’s a kind of pink slime that can be added to wheat products as well!

It’s called "whey protein concentrate," and you’re likely to find it in prepared foods, such as power bars. It’s derived from milk, which aside from being skimmed, can also be broken down into several parts, one of which is "whey." Separating milk into "curds" and "whey" is the first step in making cheese.
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