Ever forget if an egg is hard-boiled or raw? It's tough to tell without cracking it open.
Luckily, there's a simple, reliable trick used by home cooks and pros alike: spin the egg and observe.

1. Take the egg in question.
2. Spin it vigorously on a flat surface.
3. If it spins smoothly on its axis, it's hard-boiled.
4. If it wobbles or spins erratically, it's raw.
There you have it—a quick way to differentiate hard-boiled from raw eggs. Simple, practical, and effective!
The science? A raw egg has liquid inside that sloshes around during spinning, causing instability, while a hard-boiled egg spins steadily like a top.