Take a wide mouthed vessel which is neither too sallow nor too deep and pour some cold water in it, now put the egg in question in the water.
If the egg lie at the bottom on its side it means it is a fresh egg.
If the egg is tilted with its large end up means egg is older but edible.
If the egg floats on water, it is not for consumption!
This is called as 'Egg Water Test.'
Did you know this?