Why calories are so important
The average person doing minimal amounts of work needs about 2500 calories per day to maintain full functionality.
Partaking in survival activities can easily increase this to over 3000. Although to support human life 1200 calories can be targeted in severe survival situations
10 foods that don't expire
There are a number of foods that last almost indefinitely however, as with everything there are procedures to follow to ensure these foods remain edible. We have put together links to some great guidelines for those who would like to know more about each of these long life readily available products. The usual tips of airtight containers, away from moisture and low temperature apply to almost all but there can be specific tips and traps.
White Rice
If stored properly and you ensure there is no chance of external bugs getting into your stores white rice has an almost indefinite shelf life.
More info : https://www.riceland.com/rice-faqs
Honey
Honey has been in Egyptian tombs over 3000 years old. Honey is said to never expire if stored correctly however can change in consistency.
More info: https://carolinahoneybees.com/how-to-store-raw-honey/
Salt
Pure salt is a mineral, meaning it doesn’t expire but needs to be stored and sourced correctly. Different salts can be used to make ice cream, cure meats and pickling. It has also been used in bartering due to its many useful properties.
More info: https://seedtopantryschool.com/how-and-why-to-store-salt/
Soy Sauce
Soy sauce is made up of water, salt, wheat and soy beans. The process of making soy sauce uses a fermentation step so be wary of brands which use chemicals to try and make this process complete faster.
More info: http://www.eatbydate.com/other/condiments/how-long-does-soy-sauce-last-shelf-life/
Sugar
Sugar lasts indefinitely unless contaminated by water. Because salt attracts water molecules, bugs and insects you will need to store it super securely.
More info: https://www.doesitgobad.com/does-sugar-go-bad/
Dried Beans
Time alone won’t make beans go bad, but it can change the taste. If you store your dried beans in a sealed container at room temperature they will keep almost indefinitely. And if you take into account 500 grams of dried beans can make up to 6 cups of beans when rehydrated and cooked you can see how they make for a compact lite weight food source.
More info: http://centralbean.com/storing.html
Pure Maple Syrup
One of the good things about maple syrup is that it can't freeze, so can be kept in the freezer to inhibit any chances of contamination from mold. Although, even this can be removed from the top and the syrup decanter into another bottle for safe storage.
More info: https://fruitfulkitchen.org/does-maple-syrup-go-bad/
Powdered Milk
Although not forever, powdered milk can last up to 25 years if unopened and stored correctly. It has the added bonus of not only helping you survive in a disaster, it's also available when you have no milk in the fridge and are having guests over for tea.
More info: http://yourthrivelife.com/2014/03/10/powdered-milk-mysteries-revealed/
Hard Liquor
Liquor does not expire as such but will lose its flavour over time. The key storage tips are similar throughout this thread, store upright although it is recommended to lay bottles on their side once a year for about an hour to keep the cork wet and stop it deteriorating over time and compromising the seal.
More info: https://kitchenadvisor.net/tips/does-whiskey-go-bad
Pemmican
This is an interesting one. Pemmican is a survival super food made from tallow, dried meat and dried berries. The shelf life will depend on what it contains and how it is made. Pemmican has been used historically as an important part of indigenous lifestyles in North America and is still made today.
More info: https://www.wildernesscollege.com/pemmican-recipes.html