Tell If Eggs Are Raw or Hard Boiled

The easiest way to remind yourself whether eggs are cooked or raw is by marking the shell with a pencil or marker directly after hard boiling an egg.

Another simple technique is to drop some loose onion skins in the boiling water with the eggs. The boiled eggs will come out a nice beige color and can be easily differentiated from your raw eggs!

However if you forget to do either of the above steps, there 3 other ways to differentiate between hard boiled and raw eggs.

Steps

 * 1) Lay the egg on its side on a smooth, hard surface, like a cutting board in the kitchen sink.

Method 1

 * 1) Spin it with your fingers and thumb.
 * 2) Stop its rotation with a finger tip, by placing your finger directly down on the rotating egg.
 * 3) Lift your finger up, immediately.
 * 4) *If the egg remains still, it is a hard boiled egg.
 * 5) *If the egg continues to slowly rotate, it is uncooked.

Method 2

 * 1) Place your thumb on one end and your middle finger on the other.
 * 2)  Spin the egg using a 'clicking' movement (push thumb forward whilst drawing the middle finger back).
 * 3) *If the egg spins fast, then the egg has been hard boiled.
 * If, however, it spins very slowly (or is difficult to spin at all), it's raw.

Method 3
There is a much practical and easier method, just shake it. Since the inside is liquid you will feel the movement inside. If it is boiled, since it is solid, you will feel it as still as a rock.

Tips
When the egg is uncooked, the liquid in the egg (i.e. the white and the yolk), has momentum and continues to move within the egg shell even when the egg has been stopped. Once it is released the egg regains its motion. If the egg is hard boiled, it is solid and once its rotation has been stopped with your finger, it will remain stationary.
 * Why Does This Work? The Principle of Inertia.
 * Always spin eggs inside the kitchen sink! If they fly off the counter and onto the floor you will quickly determine whether it is raw or cooked, but in a somewhat messy manner!

Warnings

 * Avoid cracking the shell as this could make a mess.

Related Tips and Steps

 * How to Blow the Shell off a Hard Boiled Egg
 * How to Boil an Easy Egg
 * How to Make Great Stuffed Egg Whites
 * How to Make a Scrambled Egg Sandwich
 * How to Make Eggs Benedict