Shelling a hard-boiled egg is not very complicated but it takes a lot of time!
You can be sure that there is always a piece of shell that won't come off.
Fortunately there is a magic technique to peel a hard-boiled egg quickly.
You will be able to peel a dozen eggs without spending 20 min. The trick is to use a glass and some water. Watch:
1. Place the hard-boiled egg in a small mustard glass.
2. Add water to halfway up the eggshell.
3. Place four fingers on top of the glass and your thumb under the glass.
4. Above the sink, shake the glass vigorously for 10 seconds as shown in the video.
5. All that remains is to throw away the shell that has peeled off on its own.
There you go, you peeled a hard-boiled egg in 10 seconds flat :-)
Easy, isn't it?