Bushwalk Australia

I'm looking for a quick and easy lunch option for my forthcoming ski trip. Something I can stash in my bum bag; that can be eaten cold; that is cheap or reasonably cheap and more nurticious than a Snickers bar.
If anybody here has tried them I have just one simple question.
Are they edible as they are of should I carry a bottle of Tabasco or extra salt and pepper or both?

I bought a half a dozen sachets. I'll report back