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Why does gravy get skin on it as it cools?
Question Date: 2007-05-07
Answer 1:

When you make gravy, you add flour to make it thick. Flour has protein in it and this floats to the top, forming a skin. You can eat it and it tastes fine. Sometimes people skim it off to make the gravy look better.

You can learn a lot about science by cooking. I hope you stay interested in it.

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