Their website says it can tolerate heat (I'm thinking isomalt) but it doesn't say if it's food safe.
Their website is tapplastics.com
Hmmm, looks interesting. The mold looks similar to one of the molds Jorg used on his last challenge.
I was actually looking at a web site earlier that talks about mold making and the materials used to do it including molds for Isomalt.
Here is the link and hope this helps
I love their product. It's addicting to make molds.