When I was a kid, me and friends used plastic bags to boil water for cooking when out in the forest or at a beach on the nearby river. As long as you had enough

When I was a kid, me and friends used plastic bags to boil water for cooking when out in the forest or at a beach on the nearby river. As long as you had enough water in the bag, it worked great (though there were probably some fun chemicals being released from the bag...)