Is there a basic rule of thumb ratio of freeze-dried to the bulk food items? For example, say you have a #10 can of freeze-dried beef stroganoff or something, what would be a good way of figuring out how much 'filler food' such as rice or whatnot should be set aside to enhance the meals? I've been thinking about this and really can't come up with a decent number that can quickly and logically be assigned. Keep in mind that the servings may not be the same size for the long-term/freeze-dried stuff either. Having a number that's off a bit shouldn't matter as long as it's something, right?