On 08/06/2016 09:55 AM, ImStillMags wrote:

(snip)

>
> Took me a bit of fiddling to figure out what worked best with my particular crock pot.
> Turns out mine needs to be left on high to hold the temperature in the perscribed range.
>
> I put the breast in a zip lock bag. Set the temp for 140 and let it go for 3 hours
> after temp was reached.
>

If you're using name-brand Ziplocs, you're probably safe. They're made
of polypropylene, which doesn't emit harmful chemicals at cooking
temperatures. Couldn't find what other brand zipper bags are made of.

Food wrap however, is made from PVC (poly vinyl chloride), which can
emit BPA (a hormone disruptor associated with cancer) when heated or
even phosgene gas, when burned.