She's been making modeling chocolate for about 10 years. Professionally she can use the clay to sculpt flowers or other small pieces to decorate cakes, cupcakes or cookies.

Modeling chocolate, also called chocolate leather, plastic chocolate or candy clay, is a chocolate paste made by melting chocolate and combining it typically with corn syrup, glucose syrup, or gold… ...

This modeling chocolate was easy to make, very versatile, and you could use it to sculpt just about anything. It is a very forgiving dessert medium and I think Chewbacca turned out fairly well.