Step 1: Place the egg inside the glass gently.
Step 2: Pour the vinegar inside the glass until the egg is covered and sinked.
Step 3: Wait 24 hours. Throughout such hours, you can see that the egg shell is starting to disappear.
Step 4: After 24 hours, rinse the egg. You could see that the egg no longer has a shell. The shell also becomes bouncy which one can also play with.