Originally Posted by
gauvins
Put the bag in a pot filled with water. Heat the pot -- the water will eventually boil and heat the bag content without going over 100C (212F), i.e. no risk of melting the plastic bag, but how enough to melt the wax.
This reminds me of the boil in a bag meals you could buy in the 1970s, not a good memory. Put the bag in hot or boiling water to heat up your meal. When it is heated up, pour your bag into your bowl or mug. That was the theory.
We bought some of those meals for a five day winter camping trip, hiked in out in the middle of nowhere on our snowshoes. We figured we could melt snow for our water source, heat up the meals in the bags, and once the food was hot, after we took the meals out of the water we would add snow to cool the water and have the water to fill our water bottles. But the bags leaked, thus the water was contaminated with food, not the best water source for filling our water bottles. And of course water got into the bags to make a runny meal too. Good in theory, but in practice, not so much.