What temperature-safe bags are out there? I did some digging into this a few months ago and couldn't find anything conclusive. All I found were blogs, quotes, etc by wannabe scientists. Of note: • http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3222987/ Nearly all plastics (even the BPA-free ones) leach estrogenic activity chemicals • http://pprc.org/index.php/2013/networking/p2-rapid/do-plasti... Basically said that the…
The bottom line: No one knows how safe HDPE sous-vide is in the long run. There's nothing conclusive out there, though what little evidence there is points to it being safe. Nathan seems so think so, too: http://modernistcuisine.com/2013/01/why-cook-sous-vide/
In the end you have to make a personal call. For me, the risk of undiscovered effects is vastly outweighed by the awesome food I serve.
I respect your concern, even if I don't share it, and I'm hoping to solve it soon enough, too. Be on the look out for a new product from us in the coming year.