I still think it's a great Idea even with the concerns of zip lock. So this is what I'm thinking

. Instead of useing ziplock tryfood saver bags. Make them the day before keep cold and when ready cut a corner. No pun intended [8D]. Orgettheir quart bags when camping, if you don't have electricity, use zip ties to close the top and stand them on end. I haven't tried it yet but it sure looks good on paper. Food saver bags are boil proof