Hold an egg up to your ear. Give it a gentle shake. Do you hear a sloshing sound? Slosh-slosh? That’s bad. Fresh eggs are tight-lipped. They don’t make a peep because the yolk is cozy and compact.
A sloshy egg means the white has thinned out like a cheap alibi. It’s older. Not necessarily rotten, but definitely past its prime. Cracking it for a poached egg? Risky business.
If you hear nothing? Give yourself a gold star. That egg is ready for its close-up.