a selection of canned foods for long term food storage

Long-Term Food Storage Techniques

When it comes to emergency preparedness, long-term food storage is an essential part of the equation.

It’s about more than just having a fully stocked pantry; it’s about having a plan that ensures you and your family can sustain in case of prolonged power outages, natural disasters, or other unforeseen circumstances.

In this guide, we’ll explore the different techniques that you can utilize for long-term food storage, so you can be better prepared for whatever the future may hold.

Preparing Your Emergency Food Supply for Long-Term Storage

a row of canned foods

Building a successful long-term emergency food supply involves careful planning and consideration.

It’s more than just purchasing large quantities of food and storing them away. It requires strategic selection of food items, proper storage conditions, and effective organization and rotation systems.

Here’s a detailed look into how to prepare your emergency food supply for long-term storage.

Choosing the Right Food Items

The type of food you store is crucial. The ideal long-term storage foods are those that are non-perishable, nutrient-dense, easy to prepare, and versatile. Here are some categories of food you should consider:

  1. Canned goods: These are a staple in any long-term food storage plan. Items such as vegetables, fruits, beans, and meats can last for several years in canned form.
  2. Dried goods: Foods like rice, pasta, lentils, and beans are excellent for long-term storage. They’re lightweight, compact, and can be used in a variety of meals.
  3. Freeze-dried or dehydrated foods: These can last for many years when properly stored. They’re also lightweight and often only require the addition of water to prepare.
  4. Powdered milk and eggs: These are a great source of protein and other nutrients, and they can last for several years if stored correctly.
  5. Spices and condiments: These might not seem essential, but they can greatly enhance the taste of your stored food, making it more enjoyable to eat during difficult times.
  6. Seeds: For the long-term, having seeds on hand for a survival garden can be an ongoing source of fresh food.


Water is an essential part of your long-term storage plan. Humans can’t survive for more than a few days without it, and it’s needed for the preparation of many meals. Store plenty of bottled water and consider options for water purification and filtration.

Storage Space

The location and organization of your food storage area are vital to the success of your long-term food supply. Find a cool, dry, and dark location to store your food. A basement or a dedicated storage room is ideal, but even a well-insulated closet can work.

Shelving can help maximize space and keep your food organized. Make sure to store heavier items, like canned goods and buckets of grains, on lower shelves. Lighter and more fragile items, like dehydrated meals and vacuum-sealed packages, can be stored on higher shelves.

Inventory and Rotation System

Keeping track of your stored food ensures that nothing goes to waste and helps you know what you have on hand at any given time. Label your food items with the date of purchase and expiry date, if applicable.

Implement a rotation system where you consume the oldest items in your storage first. When you use an item from your storage, replace it with a new one. This way, your food supply stays fresh, and nothing expires unused.

In conclusion, preparing your emergency food supply for long-term storage involves careful selection of food items, adequate storage space and conditions, and an effective inventory and rotation system. With these in place, you can be confident that your food supply will sustain you and your family in times of need.

What is the Best Way to Preserve Food for Long-Term Storage?

six jars of homemade canned food

Preserving food for long-term storage involves methods that inhibit the growth of bacteria, yeast, and molds that cause food spoilage. There are several ways to accomplish this, and each method has its own set of advantages and disadvantages. Here’s an in-depth look at the best ways to preserve food for long-term storage.


Canning is one of the most popular methods for preserving food. It involves placing food in jars and heating them to kill or weaken any microorganisms that can cause spoilage. This heat also creates a vacuum seal as the jars cool, preventing new organisms from contaminating the food.

Canning can be done through water bath canning or pressure canning. Water bath canning is used for high-acid foods like fruits, jams, jellies, pickles, and salsas. Pressure canning, on the other hand, is used for low-acid foods like vegetables, meats, and poultry.

Although canning requires some specific equipment and knowledge, it allows you to preserve a wide variety of foods, including fruits, vegetables, meats, and soups. Additionally, properly canned foods can last for years.


Dehydration is a preservation method that removes water from food. By eliminating water, you inhibit the growth of bacteria, yeasts, and molds, which need water to thrive.

RELATED READING: Shelf-Stable Food List

Foods can be dehydrated using an electric dehydrator, an oven, or natural sunlight. Commonly dehydrated foods include fruits, vegetables, and meats (to make jerky). One of the benefits of dehydrated food is that it’s lightweight and compact, making it an excellent choice for space-efficient storage or for portable emergency food supplies like those needed for hiking or camping.

However, while dehydration can significantly extend the shelf life of food, it doesn’t typically last as long as other methods like canning or freeze-drying.


Freeze-drying, like dehydration, removes water from food. However, it does so in a way that retains the food’s original shape, color, taste, and most importantly, its nutritional content better than other methods.

The process involves freezing the food and then reducing the surrounding pressure to allow the frozen water to sublimate directly from ice to vapor. This process results in a product that is extremely lightweight and can be stored for a very long time—up to 25-30 years in some cases.

The primary drawback of freeze-drying is that it requires special equipment that can be expensive. However, commercially freeze-dried foods are widely available.

Vacuum Sealing

Vacuum sealing is a method that removes air from the package before sealing. By removing the oxygen, you slow down the oxidation process that leads to food spoilage. This method works well for dry goods like rice, beans, and pasta, and can be used in conjunction with freezing for preserving meats and other perishable items.

Keep in mind that vacuum sealing doesn’t kill bacteria, yeast, or molds that may be present in the food, so it’s essential to store vacuum-sealed foods in a cool, dry place.

To sum it up, the best method for preserving food for long-term storage depends on the type of food, the available storage conditions, and the resources you have at hand. Each method—canning, dehydrating, freeze-drying, and vacuum sealing—has its own set of advantages and can be effectively used to build a diverse and resilient long-term food supply.

Using the Correct Containers for Long-Term Food Storage

The right containers play a critical role in successful long-term food storage. Your containers should be airtight, durable, and safe for food storage. Glass jars, like mason jars, are excellent for canning. For bulk items like grains and beans, food-grade plastic buckets with airtight lids work well. Vacuum sealing bags are ideal for preserving food in the freezer or combining with other methods like freeze-drying.

When using any container, ensure it’s clean and dry before filling. Label each container with the contents and the date of storage. Store containers in a cool, dark, and dry place, and avoid places with fluctuating temperatures.

Is it Possible to Preserve Food for Years without Refrigeration?

Yes, it is absolutely possible to preserve food for years without refrigeration. Methods like canning, dehydrating, and freeze-drying are designed to create a stable environment that prevents the growth of bacteria and other microorganisms that cause food to spoil. These methods, combined with the correct containers and storage conditions, can keep food safe and edible for years.

How to Preserve Food for 15 Years or Longer

Preserving food for 15 years or more is a challenge but entirely feasible with the right approach. Freeze-dried foods, properly sealed and stored, can last up to 25-30 years. Canned goods also have a long shelf life, often reaching or surpassing 15 years.

When preserving food for this long, the quality of the starting materials is crucial. Foods should be fresh and of high quality. The methods of preservation should be executed correctly, and the containers should be airtight and robust.

Additionally, the storage environment plays a significant role in the longevity of your food. Foods stored at cooler temperatures will last longer. A consistent temperature is also essential as fluctuations can lead to spoilage. The storage area should be dark and dry to prevent the degradation of both the food and its packaging.

Other Tips to Consider for Storing Food

Apart from the basics, there are some additional tips that can help ensure your long-term food storage is a success:

  1. Variety: Include a variety of foods in your storage. This not only provides a balanced diet but also helps to prevent “food fatigue” from eating the same thing repeatedly.
  2. Special Dietary Needs: Consider the dietary needs of your family. Store foods that are suitable for those with allergies, medical conditions, or specific dietary preferences.
  3. Rotation: Regularly rotate your food supplies to ensure nothing goes to waste. Use the oldest items first and replace them with new supplies.
  4. Regular Checks: Regularly check your storage area for signs of pests or damage. This will help you spot any problems before they become significant.
  5. Cooking and Preparation: Remember that you’ll need a way to prepare your food in an emergency. Store matches, a portable stove, and basic cooking utensils with your food supply.


Long-term food storage is an essential part of emergency preparedness. By understanding the best methods of preservation, using the correct containers, and maintaining the ideal storage conditions, you can ensure a reliable supply of food for years or even decades.

Remember to consider the variety and dietary needs, and to regularly rotate and check your stock.

With these strategies, you’ll be well-equipped to sustain and nourish your family through any situation.