When you crack the egg open the white of the egg should also be fresh and the yoke will not run, too much. Another test for freshness is a water test. Place egg in a bowl and cover with water. If the eggs stays on it’s side it is still fresh. If it bobs at the bottom of the bowl air is starting to collect in the shell and it may not be as fresh. An egg that floats should be be used, it has gone bad.