Materials:

Raw egg (still in shell)

Vinegar

Glass jar (clean)

Directions:

1.       Carefully place the egg in the jar

2.     Cover the egg with vinegar

3.    Leave for 24 hours

4.     After 24 hours, drain old vinegar and cover egg with fresh vinegar

5.    Leave for 1 week

The egg will not only become rubbery, but will also grow quite a bit (ours grew to about 3 times it’s original size).