Actually the way that Freezer Bag Cooking TM (as put together by the host of freezerbagcooking.com), the freezer bag isn't inserted in boiling water, water is poured into the bag and the meal prepared that way - no muss, no fuss, no broken plastic bags, much as you have your best results Blast. The cookbook's author sells a 'cozy', or insulated sleeve to hold the freezer bag in while the hot water cooks the meal (usually freeze dried) - holding a hot bag for 5 minutes is a prescription for dropping it. Me, I just put it in my cap.

The website freezerbagcooking.com gives a good intro to all this, has reviews of trail food, and some great recipes, although I'd say go ahead and buy the recipe book for some even better ones. The GSI kettle she recommends is good, I have a similar one put out by Primus a few years back. The author is a dedicated PNW hiker, demos her craft at regular outdoor shows, and I believe her cookbook is #1 at rei.com. All in all though its meant to be an inexpensive and lightweight way to eat well outdoors, so all the gear and food recommendations are suited to travelling on the go and survival situations as well (provided you are prepared enough to prepackage the meals). Before a hiking season I usually pack up 10-12 portions at a time, and though I've never adapted that for survival situations it could be easily done. I actually took a couple freezer bag meals in my carryon on a trip to San Francisco, but ate too well to dip into that. However if there had been an earthquake I probably would be grateful to have it.