Add Yahoo as a preferred source to see more of our stories on Google. If you've ever peeled back the lid of a yogurt container to find a layer of what looks like water but is actually whey protein on ...

You’re all set to dig into your favorite yogurt. But when you peel back the lid, you notice the lush creaminess is marred by a watery pool of liquid sitting right on top. So what is that liquid—and ...

That thin layer of liquid floating on your yogurt often triggers uncertainty, even for people who eat yogurt regularly. It looks out of place, as if something has separated that shouldn’t have. Many ...