Jeff,
One way to gain more room in your bear can is to take the freeze dried meals out of their pouch and repackage them in a zip lock bag, squeezing out the excees air. Take one empty foil pouch with you to rehydrate the meal in the zip lock bag, inside the foil pouch to retain heat. You can reuse the pouch many times and this method will also reduce your trash bag.
I haven't noticed any issues with spoilage or taste since adopting this method. I also easily get 6 freeze dried meals, 12 instant oatmeal, 12 hot chocolate, 6 lipton instant cup of soup and enough gorp and snacks to last six days.