How to: Make Old Fashioned Show for Decorating

With a whisk or a hand mixer add the following ingredients:

2 cups flake soap - or you can grade white bar of soap (ivory is a really white color) with your grader
1-1/2 cups hot water
1/4 cup potato starch flour/or starch
Mix together until the combined ingredients reach stiff peaks.

You can adjust as you go. If the mix is to watery add more soap flakes. If it to stiff add warm water.
The structure of the mixer is up to you. You can leave it fluffy or continue to mix to stiff peaks like meringue.

Have fun!