At first, this might sound like a risky (read: messy) move where you'd imagine ending up with a completely smashed ... the egg's weight and force of gravity create a force that cracks the shell ...

A gardening expert has shown why you shouldn't throw away egg shells and how you can use them in a little known way. Laurelle, a Canadian horticulturalist who goes by The Plant Momma, demonstrated ...

making sure to tap all over shell. (Alternatively, you can tap and roll the eggs on a counter; keep in mind not to tap the eggs too hard!) Return cracked eggs to ice bath and let sit 5 minutes.