So, has anyone ever tested or even read about tests around any of this? I've only read statements that this is the way it is or that is the way it is. I've never read about any official or unofficial testing of these statements about how long eggs last.
It could be an easy experiment to setup. The problem is defining and identifying a bad egg. A rotten egg is easy to identify but a bad egg, one that is just past edible and will make you sick? It isn't the rotten eggs that are the danger, it is the growth of salmonella inside the egg and other bacteria that push the egg towards rotten but haven't yet rotted the egg that you don't want to eat. Eggs sink in water. Rotten eggs begin to off-gas so they float. But, there may be a condition between those two states when it isn't a good idea to eat them.
However, if you use the float test as your standard. Then you can setup an experiment. Set a dozen store bought eggs on the counter (test group 1), set another dozen in the refrigerator (test group 2). Put a third and fourth dozen in a pot of water that has been boiled for 10 minutes and allowed to cool while covered to sanitize and test the freshly bought store eggs for floating. They should all be good and they should all lay fully on the bottom of the pot. Take them out and dry them off. They are control groups A and B. Put control group A on the counter and control group B in the refrigerator. Wait a week, test control group A and control group B in water again. If there is an egg in either group that is bad, test the eggs in the test groups. Don't let them stay in the water any longer than needed to determine their status. If and when there is more than two eggs that are bad, consider the group as bad, that is how long they last. Two eggs in a store bought dozen could be older that it's fellow, I don't know, but statistically, three seems more significant where two outliers seem likely. You could keep going with the experiment until all the eggs went bad. Just to see if they go bad as a group and at what rate. One a day, or one on day one, one on day two, two on day three, three on day four and the rest on day five, or all of them go bad together.
Maybe there will be one or more eggs that never float.
Maybe I'll try it and compare to fresh coop eggs washed and unwashed. The problem there is the testing could wash away the blume that is suppose to protect the eggs. Then you don't have unwashed eggs any more.
- Will (Dragonfly)