# Food Preservation and Safe Storage

Store, dry, freeze, and preserve food without introducing foodborne illness during emergencies.

## Immediate rule

Quick-reference sequence. Immediate threats, official orders, and professional medical advice take precedence.

## Five practical skills

## Make a safe pantry and rotation plan

- Build a rotating supply of commercially packaged, shelf-stable foods: beans, rice, oats, canned fish/vegetables, nut butters, and ready-to-eat meals suited to your household.
- Include a manual can opener, clean utensils, enough safe water for preparation, and food for infants, pets, allergies, and medically required diets.
- Keep food in a clean, dry, cool place away from pests, flooding, fuel, and household chemicals; keep packs off wet floors.
- Label opening dates and repacked dry foods; check commercial “use by” safety instructions and local food-safety guidance rather than relying only on appearance.
- Use first-in, first-out: consume older safe stock first and replace it regularly.
Practical note

An emergency pantry with foods you can eat cold is safer than relying entirely on fuel or electrical cooking.

## Protect refrigerated and frozen foods

- During a blackout, keep appliance doors closed. An unopened refrigerator typically keeps food cold for about 4 hours; a full freezer about 48 hours, or about 24 hours if half full.
- Put a thermometer in the refrigerator and freezer before an outage. Use ice and an insulated cooler to keep perishables at or below 4°C / 40°F.
- Discard refrigerated perishable foods after 4 hours without power unless you can establish safe time-temperature control using a thermometer and official food-specific guidance.
- Discard perishables above 4°C / 40°F for more than 2 hours (or more than 1 hour above 32°C / 90°F ambient temperature).
- Frozen food may be cooked or refrozen if it still contains ice crystals or is 4°C / 40°F or colder; evaluate by food type.
Important safety limit

After floods, discard food contacted by floodwater. Never taste food to test safety. Refer to the FoodSafety.gov item-by-item disposal chart.

## Dry foods and package them correctly

- Use a food dehydrator or reliable published drying procedure appropriate to the actual fruit, vegetable, herb, or meat. Drying on a windowsill or in uncontrolled sun is not generally safe for meat.
- Wash and prepare produce with clean water. Blanch vegetables when the tested procedure requires it. Do not assume the same temperature/time works for every food.
- For meat jerky, use an accredited food-safety process that includes proper heat treatment; ordinary air drying is not sufficient for pathogen control.
- Cool fully, condition dried fruit where the tested method calls for it, then package in clean, dry, moisture-resistant, insect-proof containers.
- Date and inspect each package; discard products that show mold, moisture, unexpected odor, or insect damage.
Important safety limit

Never assume drying, salt, smoke, or vacuum sealing sterilizes food. Follow validated food-specific methods.

## Use safe canning and preservation methods

- Separate high-acid foods from low-acid foods. Low-acid vegetables, meat, fish, and poultry require a suitable pressure-canning process; a boiling-water bath is not sufficient.
- Follow a tested recipe precisely for jar size, preparation, pack style, processing pressure/time, and elevation adjustments.
- Do not improvise with an ordinary saucepan, oven canning, open-kettle canning, dishwasher canning, or untested “quick” recipes.
- Label sealed jars with contents and date, store in cool/dry/dark conditions, and rotate periodically.
- Do not attempt emergency canning without the required equipment, a stable energy source, a validated recipe, and time to complete it safely.
Important safety limit

Botulism toxin may be present without visible spoilage. A sealed jar is not proof that the contents are safe.

## Inspect food and prevent contamination

- Wash hands or use an appropriate sanitizer, clean preparation surfaces, separate raw from ready-to-eat food, and use safe water.
- Cook meat, fish, eggs, and leftovers to appropriate product-specific safe internal temperatures using a food thermometer.
- Reject swollen, leaking, bulging, badly rusted, punctured, or unsealed cans and jars; never open and sniff suspect home-canned food.
- Do not use meat or dairy left unrefrigerated for unknown periods just because it looks normal; heat may not eliminate all hazards.
- Record any suspected food-poisoning symptoms and seek medical/poison-center help promptly for severe illness or possible botulism.
## Practice and preparation

- Mark the freezer thermometer and store a printed disposal chart.
- Build a 72-hour no-cook menu from your current pantry.
- Practice drying one approved fruit or vegetable using a tested method.
- Make a dated rotation list and photograph the storage shelves.
Local rules and real emergencies

Use this as a training reference. Follow official incident alerts, regional law, manufacturer instructions, and qualified professional guidance. Do not attempt unfamiliar high-risk activities while already in danger.

- FoodSafety.gov — Food Safety During Power Outages
- NCHFP — Research-based Preservation Methods
- NCHFP — Ensuring Safe Canned Foods
- NCHFP — Packaging Dried Foods
Official guidance may vary by country and can be revised; verify local updates before acting.