ry the vacuum seal type bags.
because I have a dehydrator and a vacuum seal gadget I seal my bags with enough room to cut the top and add water a few times each.
There is no detectable (to me) plastic taste.
I have had failures from other type of plastic bags, the vacuum seal type are very strong.
you can freeze them as well as put them into boiling water as you do with the foil type.
This would not work well on a long trip but it does for up to 5-7 days.