What is the best soap to carve in?

I did a soap carving of a scarab beetle today. I have a simple way to do this...

1. Get a bar of soap. ( I used Irish Spring a practice, Ivory is perfect)

2. There are many tools you can use. I use plastic forks , spoons, and plastic knifes with serrated edges. and toothpicks. There are others, but these are safe alternatives.

3. choose a pattern.

4. whittle away the outside ...

5. DO NOT SOAK SOAP IN WARM WATER FOR MORE THAN 30 SECS. UNLESS YOU WANT A SOAPY PILE OF CRUD!!!

6. add detail to the carving.