https://www.amazon.com/dp/B099SD7LM3
20 yr lifespan. 10 bucks. Never know when you'll need it. Might as well be prepared. Buy multiple and store them away.
Next pandemic, war, natural disaster, stuck in a cave or woods may strain the world's supply again so buying long lasting emergency kits and food rations are an investment for your survival. You'll thank yourself when something unexpected happens and you have these left to nibble on.
Now that I think of it, buying food rations could be a good way to save money if you are poor and lose your job. Just need to find the cheapest food rations which would be buckets of them. Obviously, look the ingredients since you don't want medical episodes.