Quote:

"I use Food Saver bags. No plastic taste. TrailCooking.com says Glad bags. Others do not work as well."

Ziplock brand quart-sized ziplocks work great for me.

I have read that using local store-brand ziplocks isn't a good idea, so never tried it. Not just for any potential plastic leeching, but just in general if you're pouring very hot water into food powder in the backcountry, you want to be confident that the bag is up to holding that all together without any sort of failure.