Posts Tagged ‘Friday Finds’

Jen asked me a question about the eggs she bought from my favorite farmer, Otis Family Farm, at the St. Paul Farmer’s Market, and I thought it was a good enough question to answer online.

How can you tell if an egg is still fresh?

I’m not sure where I first heard about this, I could have been from my mom, but regardless, I found the answer on about.com and copied it here.

Did you know you can test an egg and get an approximatation of its age? All you need are the eggs and a bowl of cold water.

Gently drop the egg into the bowl of water. If it:

  • sinks to the bottom and stays there, it is about three to six days old.
  • Sinks, but floats at an angle, it’s more than a week old.
  • Sinks, but then stands on end, it’s about two weeks old.
  • Floats, it’s too old and should be discarded.

For a test just to see if the eggs are all right to use, dissolve 2 tablespoons salt in 2 cups cold water, then put the egg in the water. If it sinks, it’s good; if it floats, it’s too old.

Eggs act this way in water because of the air sac present in all eggs. As the egg ages, the air sac gets larger because the egg shell is a semi-permeable membrane. The air sac, when large enough, makes the egg float. Eggs are generally good for about three weeks after you buy them.

And how do you see if an egg is hard cooked? Spin it on a flat surface. If the egg wobbles, it’s fresh because the insides are moving around. If the egg spins smoothly, it’s cooked.

Okay – so according to these guidelines, the above egg should be 3-6 days old. I don’t think so. That egg is at least 3 weeks old. Maybe becuase it’s free-range and nearly organic that it’s still in such good shape. Maybe the trick doesn’t work. Regardless, my egg was still good, so I ate it. Two in fact, and they were awesome.

So, folks, if nothing else, you may have learned something today. I know I did.


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