There actually is a way to tell if an egg is fresh without cracking it or floating it in a glass of water.
All you have to do is pick up the egg and shake it. Honest. That’s it.
An egg that’s been around for awhile will slosh around and you’ll be able to feel the yolk jiggling around inside.
That’s because as an egg ages, the air sac at one end enlarges as air seeps in through the shell and evaporates the moisture in the egg white. So there’s empty space and the insides start moving around.
When you shake a fresh egg, you won’t feel anything jiggling.
So you’ll want to use the eggs that are jiggling first. (unless you want to eat only the freshest eggs, in which case you can scramble the older eggs up for your chickens to eat. Mine love scrambled eggs!)
And it’s always a good idea to crack each egg into a small bowl to be sure it hasn’t gone bad before adding it to your cake mix or pancake batter or frying pan. Just to be on the safe side.