How do you make a bouncy egg into normal egg?

Here's why:

* Bouncy eggs are a science experiment. They are created by soaking a raw egg in vinegar for several days. The vinegar dissolves the eggshell's calcium carbonate, leaving behind a thin rubbery membrane.

* The membrane is permanent. Once the eggshell is dissolved, you can't put it back. The bouncy egg is a different state of matter.

So, while you can't "undo" the bouncy egg, you can certainly enjoy its unique properties!