Storing Food Safely
College of Agricultural, Consumer and Environmental Sciences, New Mexico State University
Author: Extension Food and Nutrition Specialist, Department of Extension Family and Consumer Sciences, New Mexico State University. (Print friendly PDF)
How many times have you wondered if you've kept food too long and asked, "Is it still all right to eat?" To help you decide whether to keep it or throw it out, here are some simple guidelines and a food storage timetable.
Basic Food Storage Rules
- The first rule in handling food is to keep it clean. Before preparing food for storage, wash your hands well and make sure utensils are absolutely clean.
- When shopping, choose cans that are not dented on the seam or rim. In your home, quickly dispose of foods in leaking, bulging, or rusting cans.
- Keep food either hot (above 140°F) or cold (below 40°F), never in between for any length of time as this temperature "danger zone" provides ideal conditions for the growth of common bacteria that can cause spoilage or even food-related illnesses. Never leave foods in this danger zone for more than two hours.
- Most importantly, smell—but don't taste—any food you suspect is spoiled. If in doubt, throw it out!
In general, most canned foods have a very long "health life" and when stored properly are safe to eat for many years. A product's practical shelf life, however, is tied to proper storage. Although canned foods may be perfectly safe to eat, they may gradually start losing nutrients or flavor, so as a general rule, use them within a year.
To keep canned foods at their best quality:
- Store in clean, dry, cool cabinets away from the range, the refrigerator's exhaust, or other sources of heat.
- Don't store in cupboards where pipes are located. Leaks can damage food containers.
- Keep in a dark place because prolonged light can affect food color, making it look less appetizing while still safe to eat.
- Always store metal cans off the floor, especially bare concrete. Moisture can wick up the cans and encourage rusting.
Check the Label
Product freshness dating on some products can help you decide how long to store them. The "sell by" or "pull" date generally displayed on dairy products and fresh bakery products is the last date the product should be sold, allowing you a reasonable length of time to use the food at home.
The "best if used by (or before)" date used on items with longer shelf lives like canned foods, frozen foods, cereals, and fried snack foods indicates the approximate date when the product quality and flavor will begin to decline. This is not a purchase or a safety date.
The "use by" date found on refrigerated dough products, packaged yeast, and eggs tells you the last day an item should be used before it's likely to lose flavor or quality. This date is determined by the manufacturer of the product. Do not buy or use baby formula or baby food after its "use by" date.
Foods That Need Special Care
Take extra precautions with foods that are especially susceptible to bacterial growth—poultry, fish and shellfish, meat, dairy products, puddings, stuffing, and creamed mixtures.
Cover leftover cooked meats and poultry tightly after use and store them in the refrigerator immediately. Use within two days.
Avoid using cracked eggs. If you must use them, make sure they are cooked thoroughly to kill any bacteria that may be in the egg. Do not cool cooked eggs in water on the counter; cool them in cold running water, then refrigerate or use immediately.
For ease of preparation and food safety considerations, cook dressing (stuffing) separately from the chicken or turkey. However, if you decide to stuff poultry, never stuff it the night before you roast it. When refrigerating leftover poultry and stuffing, remove the stuffing from the bird and store in separate containers.
Cook meat and poultry all the way through. Do not cook partially to finish later.
Refrigerator and Freezer Storage
Set your refrigerator between 34 and 40°F and use a thermometer placed in the refrigerator to alert you to temperature fluctuations. Don't overload the refrigerator as air must circulate freely to cool all foods evenly. Clean the refrigerator regularly to remove spoiled foods so that bacteria can't be passed to other foods. Store food in foil, plastic wrap or bags, or airtight containers to keep food from drying out.
The freezer should be set at 0°F or lower, and a thermometer should be used to monitor freezer temperature, which should not rise above 5°F. Check the thermostat for the proper setting.
To package items for the freezer, especially meat and poultry, remove the product from its original container and rewrap using heavy-duty foil, moisture- and vaporproof paper, plastic freezer wraps, or freezer containers. Foil may develop holes when folded, causing freezer burn. If necessary, use special freezer tape to ensure airtightness.
Before freezing, label all freezer foods with the date packed, type of food, and weight or number of servings before freezing.
Partially thawed food can be refrozen safely as long as it still has ice crystals and has been held no longer than a day at refrigerator temperatures. Refreezing, however, may cause a loss of quality, so it's best to cook the food and then refreeze it. Combination dishes (pies, stews, and casseroles) that have been thawed should not be refrozen.
Pantry or Dry Storage
Key points to remember for pantry or dry storage locations are to keep the areas dry, cool, and dark, as well as orderly, clean, and free from insects and rodents. The storage temperature should be kept at about 50°F to maintain food quality, although 60 to 70°F is acceptable. Keep foods in the coolest cabinets in the kitchen, not near the oven, stove, or refrigerator exhaust.
Do not store foods under the kitchen sink or next to household products. Good housekeeping is also a must. Be sure to clean out storage areas periodically and remove crumbs and other food particles that can collect on shelves, in corners, and in cracks. Use metal, glass, and plastic containers with tight-fitting lids to keep out moisture, air, and insects. And remember—using a first-in, first-out inventory system will ensure you use the oldest food items first.
Maintaining Freshness and Quality
To preserve the freshness and quality of food, follow these general principles:
- Buy foods in reasonable quantities. Excess food may be wasted through spoilage.
- Select sound packages of food. Avoid items in torn, dented, or damaged packages.
- Use a first-in, first-out system of rotation and use foods in their order of purchase. Mark foods with purchase date or use label dates.
- Take time to reseal packages such as cookies, biscuits, and cereals carefully after use.
Food Storage Chart
Storage times listed in the following table are intended as useful guidelines, not hard and fast rules. Some foods may deteriorate more quickly and some may last longer than the times suggested. The times will vary depending on growing conditions, harvesting techniques, manufacturing processes, transportation and distribution conditions, nature of the food, and storage temperatures. Remember to buy foods in reasonable quantities and rotate the products in your pantry, refrigerator, and freezer. Trust your own common sense. As a helpful reminder, store this guide in your kitchen or pantry.
Original author: Alice Jane Handley, Extension food and nutrition specialist; previously reviewed by Susan Wright and Martha Archuleta, Extension food and nutrition specialists.
To find more resources for your business, home, or family, visit the College of Agriculture and Home Economics on the World Wide Web at aces.nmsu.edu.
Contents of publications may be freely reproduced for educational purposes. All other rights reserved. For permission to use publications for other purposes, contact email@example.com or the authors listed on the publication.
New Mexico State University is an equal opportunity/affirmative action employer and educator. NMSU and the U.S. Department of Agriculture cooperating.
Revised and electronicaly distributed October 2011, Las Cruces, NM.