Freezer bag cooking is a great way to minimize mess out in the wild, but you do have to be careful. You have to make sure the plastic bag doesn't touch the bottom of the pot while it's on the stove. If it touches the bottom the plastic will melt and dump all your food into the water.

I have the best results when I bring the water to a boil, add the freezer bag of food, then take the pot off the stove and place it in an insulating sleeve. Let the bag/food soak for 10-15 minutes in the hot water, maybe take it out one to "squish" the food around some the heat it evenly.

This works great for canned food, scrambled eggs, etc... When you are done eating cleaning up consists of rolling up the freezer bag and sticking it in a small Lexan bottle. My long-handled titanium spoon gets licked clean and then wiped with an antibacterial handiwipe. It's the safest, laziest way I've found to cook in the woods.

-Blast