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Dec 9, 2008

  
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Cat Food Storage
Packaging and storage recommendations There are many ways of storing and preserving foods. Most methods significantly reduce the nutritional value of foods, and only freezing and freeze drying are able to preserve food nearly unchanged in nutritional quality. To store your homemade, raw cat food, you must freeze it – unless you are in a position to use what you have prepared within two days.

Containers which have proven useful for freezing your cat’s homemade food are:
  • Small, plastic freezer containers. Available in a variety of brands and sizes, these containers enable you to neatly freeze your cat’s food pre-portioned. The portions easily thaw in these containers and form an attractive pudding when turned onto your cat’s dinner plate. The containers are dishwasher safe, can be sterilized in boiling water, and last for years.
  • Small, glass jars are a great alternative for people who dislike the storage of food in plastic containers. Glass jars have the same properties as plastic containers for storing and freezing your cat food, with the exception that glass needs to be handled with greater care to prevent breakage.
  • Ice cube trays find their greatest application during the transition period, when your cat might not eat full portions of the homemade food, yet. Freezing the homemade cat food as ice cubes enables you to thaw small quantities of food fresh every day and prevent waste. It is best to use the ice cube trays to rapidly freeze the food in the desired portion, and then to store the frozen cat food cubes loose in freezer bags for longer storage. To thaw, simply place the frozen cubes on your cat’s dinner plate and leave in the refrigerator over night.
  • Small freezer bags are great for space saving storage of the food in your freezer and extremely convenient for thawing. Fill the freezer bag with the desired amount of food and flatten out the food to fill the entire space in the bag. This will form easy to stack “sheets” of frozen cat food in your freezer which thaw in minutes if floated in a water bath. Freezer bags make great packaging solutions for those of us who cannot get used to remembering to take out frozen cat food the day before for thawing in the refrigerator. The drawback of freezer bags is that they are not really re-useable.
These methods are those which we have the most personal experience with. Maybe you will find another way more useful for your own situation. Those of you with 3 cats or more don’t actually have to freeze the food at all. For our own seven cats we prepare a batch of food fresh every other day, and store it in the fridge between meals. Simply prepare ½ batch for fewer cats. On the other hand, you may find it more convenient to multiply the recipe and prepare enough food to last a month.


What Can You Freeze? The following is helpful information from the USDA Freezing and Food Safety Fact Sheet


You can freeze almost any food. Some exceptions are canned food or eggs in shells. However, once the food (such as a ham) is out of the can, you may freeze it. Being able to freeze food and being pleased with the quality after defrosting are two different things. Some foods simply don't freeze well. Examples are mayonnaise, cream sauce and lettuce. Raw meat and poultry maintain their quality longer than their cooked counterparts because moisture is lost during cooking.

Is Frozen Food Safe?
Food stored constantly at 0 °F will always be safe. Only the quality suffers with lengthy freezer storage. Freezing keeps food safe by slowing the movement of molecules, causing microbes to enter a dormant stage. Freezing preserves food for extended periods because it prevents the growth of microorganisms that cause both food spoilage and foodborne illness.

Does Freezing Destroy Bacteria & Parasites?
Freezing to 0 °F inactivates any microbes -- bacteria, yeasts and molds - - present in food. Once thawed, however, these microbes can again become active, multiplying under the right conditions to levels that can lead to foodborne illness. Since they will then grow at about the same rate as microorganisms on fresh food, you must handle thawed items as you would any perishable food.

Trichina and other parasites can be destroyed by sub-zero freezing temperatures. However, very strict government-supervised conditions must be met. It is not recommended to rely on home freezing to destroy trichina. Thorough cooking will destroy all parasites.

Freshness & Quality
Freshness and quality at the time of freezing affect the condition of frozen foods. If frozen at peak quality, foods emerge tasting better than foods frozen near the end of their useful life. So freeze items you won't use quickly sooner rather than later. Store all foods at 0° F or lower to retain vitamin content, color, flavor and texture.

Nutrient Retention
The freezing process itself does not destroy nutrients. In meat and poultry products, there is little change in nutrient value during freezer storage.

Enzymes
Enzyme activity can lead to the deterioration of food quality. Enzymes present in animals, vegetables and fruit promote chemical reactions, such as ripening. Freezing only slows the enzyme activity that takes place in foods. It does not halt these reactions which continue after harvesting. Enzyme activity does not harm frozen meats or fish and is neutralized by the acids in frozen fruits. But most vegetables that freeze well are low acid and require a brief, partial cooking to prevent deterioration. This is called "blanching." For successful freezing, blanch or partially cook vegetables in boiling water or in a microwave oven. Then rapidly chill the vegetables prior to freezing and storage. Consult a cookbook for timing.

Packaging
Proper packaging helps maintain quality and prevent "freezer burn." It is safe to freeze meat or poultry directly in its supermarket wrapping but this type of wrap is permeable to air. Unless you will be using the food in a month or two, overwrap these packages as you would any food for long-term storage using airtight heavy-duty foil, (freezer) plastic wrap or freezer paper, or place the package inside a (freezer) plastic bag. Use these materials or airtight freezer containers to repackage family packs into smaller amounts. It is not necessary to rinse meat and poultry before freezing. Freeze unopened vacuum packages as is. If you notice that a package has accidentally been torn or has opened while food is in the freezer, the food is still safe to use; merely overwrap or rewrap it.

Freezer Burn
Freezer burn does not make food unsafe, merely dry in spots. It appears as grayish-brown leathery spots and is caused by air reaching the surface of the food. Cut freezer-burned portions away either before or after cooking the food. Heavily freezer-burned foods may have to be discarded for quality reasons.

Color Changes
Color changes can occur in frozen foods. The bright red color of meat as purchased usually turns dark or pale brown depending on its variety. This may be due to lack of oxygen, freezer burn or abnormally long storage.

Freezing doesn't usually cause color changes in poultry. However, the bones and the meat near them can become dark. Bone darkening results when pigment seeps through the porous bones of young poultry into the surrounding tissues when the poultry meat is frozen and thawed.

The dulling of color in frozen vegetables and cooked foods is usually the result of excessive drying due to improper packaging or over-lengthy storage.

Freeze Rapidly
Freeze food as fast as possible to maintain its quality. Rapid freezing prevents undesirable large ice crystals from forming throughout the product because the molecules don't have time to take their positions in the characteristic six-sided snowflake. Slow freezing creates large, disruptive ice crystals. During thawing, they damage the cells and dissolve emulsions. This causes meat to "drip"--lose juiciness. Emulsions such as mayonnaise or cream will separate and appear curdled.

Ideally, a food 2-inches thick should freeze completely in about 2 hours. If your home freezer has a "quick-freeze" shelf, use it. Never stack packages to be frozen. Instead, spread them out in one layer on various shelves, stacking them only after frozen solid.

Refrigerator - Freezers
If a refrigerator freezing compartment can't maintain zero degrees or if the door is opened frequently, use it for short-term food storage. Eat those foods as soon as possible for best quality. Use a free-standing freezer set at 0° F or below for long-term storage of frozen foods. Keep a thermometer in your freezing compartment or freezer to check the temperature. This is important if you experience power-out or mechanical problems.

Length of Time
Because freezing keeps food safe almost indefinitely, recommended storage times are for quality only. Refer to the freezer storage chart at the end of this document, which lists optimum freezing times for best quality.

If a food is not listed on the chart, you may determine its quality after defrosting. First check the odor. Some foods will develop a rancid or off odor when frozen too long and should be discarded. Some may not look picture perfect or be of high enough quality to serve alone but may be edible; use them to make soups or stews. Cook raw food and if you like the taste and texture, use it.

Safe Defrosting
Never defrost foods in a garage, basement, car, dishwasher or plastic garbage bag; out on the kitchen counter, outdoors or on the porch. These methods can leave your foods unsafe to eat.

There are three safe ways to defrost food: in the refrigerator, in cold water, or in the microwave. It's best to plan ahead for slow, safe thawing in the refrigerator. Small items may defrost overnight; most foods require a day or two. And large items like turkeys may take longer, approximately one day for each 5 pounds of weight.

For faster defrosting, place food in a leak proof plastic bag and immerse it in cold water. (If the bag leaks, bacteria from the air or surrounding environment could be introduced into the food. Tissues can also absorb water like a sponge, resulting in a watery product.) Check the water frequently to be sure it stays cold. Change the water every 30 minutes. After thawing, cook immediately.

When microwave-defrosting food, plan to cook it immediately after thawing because some areas of the food may become warm and begin to cook during microwaving.

Refreezing
Once food is thawed in the refrigerator, it is safe to refreeze it without cooking, although there may be a loss of quality due to the moisture lost through defrosting. After cooking raw foods which were previously frozen, it is safe to freeze the cooked foods. If previously cooked foods are thawed in the refrigerator, you may refreeze the unused portion.

If you purchase previously frozen meat, poultry or fish at a retail store, you can refreeze if it has been handled properly.

Power Outage in Freezer
If there is a power outage, the freezer fails, or if the freezer door has been left ajar by mistake, the food may still be safe to use. As long as a freezer with its door ajar is continuing to cool, the foods should stay safe overnight. If a repairman is on the way or it appears the power will be on soon, just don't open the freezer door.

A freezer full of food will usually keep about 2 days if the door is kept shut; a half-full freezer will last about a day. The freezing compartment in a refrigerator may not keep foods frozen as long. If the freezer is not full, quickly group packages together so they will retain the cold more effectively. Separate meat and poultry items from other foods so if they begin to thaw, their juices won't drip onto other foods.

When the power is off, you may want to put dry ice, block ice, or bags of ice in the freezer or transfer foods to a friend's freezer until power is restored. Use an appliance thermometer to monitor the temperature.

When it is freezing outside and there is snow on the ground, it seems like a good place to keep food until the power comes on; however, frozen food can thaw if it is exposed to the sun's rays even when the temperature is very cold. Refrigerated food may become too warm and foodborne bacteria could grow. The outside temperature could vary hour by hour and the temperature outside will not protect refrigerated and frozen food. Additionally, perishable items could be exposed to unsanitary conditions or to animals. Animals may harbor bacteria or disease; never consume food that has come in contact with an animal.

To determine the safety of foods when the power goes on, check their condition and temperature. If food is partly frozen, still has ice crystals, or is as cold as if it were in a refrigerator (40 °F), it is safe to refreeze or use. It's not necessary to cook raw foods before refreezing. Discard foods that have been warmer than 40 °F for more than 2 hours. Discard any foods that have been contaminated by raw meat juices. Dispose of soft or melted ice cream for quality's sake.

Frozen Cans
Accidentally frozen cans, such as those left in a car or basement in sub-zero temperatures, can present health problems. If the cans are merely swollen -- and you are sure the swelling was caused by freezing -- the cans may still be usable. Let the can thaw in the refrigerator before opening. If the product doesn't look and/or smell normal, throw it out. DO NOT TASTE IT! If the seams have rusted or burst, throw the cans out immediately, wrapping the burst can in plastic and disposing the food where no one, including animals can get it.

Frozen Eggs
Shell eggs should not be frozen. If an egg accidentally freezes and the shell cracked during freezing, discard the egg. Keep an uncracked egg frozen until needed; then thaw in the refrigerator. It can be hard cooked successfully but other uses may be limited. That's because freezing causes the yolk to become thick and syrupy so it will not flow like an unfrozen yolk or blend very well with the egg white or other ingredients.
Freezer Storage Chart (0 °F)
Note: Freezer storage is for quality only. Frozen foods remain safe indefinitely.
Ham, Hotdogs and Lunchmeats1 to 2 Months - Meat, uncooked roasts 4 to 12 Months - Meat, uncooked steaks or chops 4 to 12 Months - Meat, uncooked ground 3 to 4 Months - Meat, cooked 2 to 3 Months - Poultry, uncooked whole 12 Months - Poultry, uncooked parts 9 Months - Poultry, uncooked giblets 3 to 4 Months - Poultry, cooked 4 Months - Wild game, uncooked 8 to 12 Months
 
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Posted: Tuesday December 9, 2008, 5:10 pm
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