If you have enough water or ways to purify water, you can survive nicely on freeze dried foods.
Some do have added salt, a lot of it doesn't. That is more true of canned foods from the grocery store, though, that invariably use too much salt.
For instance, I have a #10 can of freeze dried peas. Ingredients listed: Peas. That's all, just peas. It has been freeze dried at the peak of nutrition, and the freeze-dried methods costs very little in terms of nutrition...MOST of the vitamins are preserved in the process. This is not true of canned foods from the grocery which simply uses heat in the processing, a process that removes vitamin C especially.
The freeze dried foods, because of the process used, usually tastes fresh after reconstituting in water. It has the consistency of the original food in most cases, and you can't tell it is not the fresh product.
Many of the freeze-dried vendors list the ingredients in their individual cans. I would check them out. The best I have found so far is:
www.honeyvillegrain.com
They even have customer's reviews on some products they sell.
Another good one is
www.beprepared.com. They are more expensive but have more variety.
Be aware that in all of the "servings sizes" that these are very small, even unrealistic servings unless they are simply side dishes. Take the "serving" size with a grain of salt. It will tell you on the cans what a serving size is. If it says 1/2 cup serving size on beef stew, for instance, I doubt if you would be satisfied with that if it is the only item in the meal. In a SHTF scenario, you are likely to be more physically active than normal, so you will need more food, not less.
Salt is more common in prepared foods, such as stews and pastry combos, etc. But salt is necessary for survival, so you shouldn't try to cut it all out.
If cost were really no object, I would look at smaller combos than those supposed to be one year supply of food. Get cases instead of that in the foods you would actually like to eat. You could get a fruit combo, for instance and a vegetable combo, or just one or two cans of different foods. You would have to look at the choices available and see how much of their combos actually appeal to you and then make a decision from there. Compare the different plans from different vendors and see which are best for you. Or, if you are buying for more than one person, buy one year's worth for one person from one company and another year's worth of food from another in order to have more variety. Their presorted one year combos are easier because you don't have to think about it.
Once you've decided on a plan, buy a few extra side orders of food that may be in short supply in the plan you get or a few cases of food that you really want more of. Add some foods from the grocery store too that you usually eat.
But yes, you can live very well off the freeze dried foods.
