How do we know a table egg is fresh?

Abe V Rotor

Immerse egg in water. If it lies on its side (horizontal) it is fresh. An old egg has larger air space at its rear end so that its tendency is to tilt vertically. An egg that floats is spoiled. Another method is candling, that is to “look through the egg” against bright light – or a lighted candle in the dark, for which the term was derived. A trained eye can tell the stage of incubation of an egg – or if the egg is unfertile (bugok). ~