Expiry Date of an Eggにまつわる役立つ知識を詳しく紐解きます。

Okay, your float test says the egg is standing upright—that’s the "still good, but use me soon" zone. But if it floats all the way to the top? Boom. Toss it. Don’t even crack it open. The smell of a bad egg is legendary for a reason: it’s hydrogen sulfide, the same gas that makes hot springs smell like a million rotten socks.

Here’s a pro tip: crack a suspicious egg into a small bowl before you add it to your pan. This saves your whole dish from a potential catastrophe. If the yolk is flat and the white is watery and runny, it’s older but still safe to eat, especially if you’re cooking it hard (like in a baked good or hard-boiled). A fresh yolk sits tall and round, like a golden dome.

Is It Safe to Eat Expired Eggs?