Fresh fish is like milk. Never let the bought fresh fish leave the refrigerator for too long. If it is processed meat, put it in the refrigerator but don't put it with other foods to prevent cross-infection. The longest storage time of different meats in the refrigerator is also different: raw ground meat, all poultry meat and seafood are generally stored for one to two days; Raw barbecue, steak and meat pieces (including beef, mutton and pork) can be kept for three to five days; Processed meat, poultry or seafood can generally be preserved for three to four days; If it is raw meat, it can be kept in the freezer for at least three months.
Eggs Many people think that eggs are relatively closed and do not need to be stored in the refrigerator. But eggs also have a shelf life, so they are more likely to deteriorate and lose nutrition at room temperature than in the freezer. And the storage of eggs in the refrigerator is also very particular. The best way to preserve the egg is to put the big head on top and the small head on the bottom, so that the yolk will stick to the air chamber after floating, which can prevent microorganisms from invading the egg.
How to store cheese bought from cheese is often unclear to many people. In fact, different cheese storage methods are different. Fresh cheeses, such as cottage cheese and high-fat cheese, have higher moisture content, so they are more likely to go bad than those with tighter texture, so these cheeses should be sealed and refrigerated and eaten within two weeks. For hard cheese, if it is sealed and refrigerated in the refrigerator, the freshness can be maintained for about 4 to 8 weeks. Under proper storage conditions, some aged cheeses can be stored even longer. If the bought cheese needs to be preserved for a long time, it must be frozen. When you eat it, you can take it out of the freezer and soften it.
Jam or sauce Jam, sauce, salad dressing and other similar foods can usually be kept in a cool and dry place. But if you start eating as soon as you open it, the rest must be refrigerated. Generally, the packaging of these foods will also indicate: please refrigerate after opening the lid.
Soy milk powder bought from the supermarket generally does not need to be put in the refrigerator, and it can be kept in a cool and dry place for at least one year. Usually soybean milk is put in the freezer of the supermarket just for better marketing. However, if the soy milk powder is not packaged separately, it should be drunk as soon as possible after opening the package, and the rest should be kept in the refrigerator, preferably within 5 days.
2 What foods should not be put in the refrigerator Bread is not born in the refrigerator, and temperature is an important factor in its aging. The research shows that the optimum storage temperature of bread is 265438 0℃ ~ 35℃. In general, the aging speed of bread will slow down when it is stored at a higher temperature, but it cannot exceed 35℃, otherwise the color and flavor of bread will be affected. The temperature of the freezer is about 2℃-6℃, which will accelerate the aging of bread. If you must store the bread in the refrigerator, you might as well wrap it with three layers of plastic wrap first.
A bottle of coffee beans or coffee powder can often be drunk for a long time, so many people throw unopened coffee into the refrigerator with the intention of "playing for a long time". In fact, the air in the refrigerator is cold and dry, and it is easy to evaporate the water in coffee beans, so that the aroma of coffee is lost. In addition, if things are kept in the refrigerator for a long time, there will be a lot of odor, which will destroy the taste of coffee. Because of the strong adsorption capacity of coffee, the smell of other foods in the refrigerator is easily inhaled by coffee powder. The correct way is to store coffee in a dry and cool place and put a small bag of desiccant commonly used in food.
Honey Honey is also a kind of food suitable for "long-term combat", so many families can find the shadow of honey in the refrigerator. However, foods with high sugar content have high osmotic pressure and low water content, which are not suitable for deterioration. There is no big problem in storing at room temperature. After being put in the refrigerator, the low temperature will accelerate the crystallization of sugar, making it almost like dough, and it is difficult to dig with a spoon when eating. The correct way is to seal the honey and put it in a cool, dry and ventilated place after buying it.
Potatoes and Onions Most people like potatoes. It is a food with high starch content, and low temperature will decompose the starch in potatoes. Putting potatoes in the refrigerator will turn the starch in potatoes into sugar, which will affect the texture of potatoes. No matter how much people like potatoes, they won't like their taste. The same principle as potatoes is onions. At low temperature, the starch in onion will also be converted into sugar, which will accelerate softening and wetting. The way to store potatoes and onions is to put a few apples in a carton or bag with potatoes. Apples release a small amount of ethylene, which can slow down the "development" of potatoes.
When bananas are damaged by low temperature, their surfaces will turn black and rot. In fact, as long as you wrap the roots of bananas with plastic wrap, you can keep them fresh, but be careful not to damage the skin of bananas and put them with apples, kiwis and other fruits. Except bananas, most tropical fruits such as litchi, pitaya, mango, papaya, etc. Afraid of cold, it is not suitable for refrigeration. At low temperature, the skins of these fruits will droop and appear some dark brown spots, which means that the fruits are frostbitten. Frostbite fruits are not only destroyed in nutrients, but also easy to deteriorate.
After tomatoes are frozen at low temperature, the meat quality of tomatoes will become soft and rotten, lose their umami or peel off, or even rot. Raw and cooked have lost their original flavor, and it is not easy to make them well. Some tomatoes began to rot after two days. This kind of tomato can't be eaten, because it has no nutrition and is easy to cause bacterial food poisoning. Tomatoes are best turned upside down when they are bought home, or they can be washed and dried, frozen in food bags and carried around.
Avocado is becoming more and more popular in recent years because of its rich nutrition, but there are great misunderstandings about how to preserve it. Many times, when we buy avocado from the store, it is still in a hard state, and it takes some time to fully mature. Ripe avocados taste great, and they are great when eaten raw or squeezed into juice. But if we put the immature avocado in the refrigerator, it will completely stop it from maturing and let it freeze in its original state.
Olive oil will become more greasy in the refrigerator, especially olive oil and coconut oil, which will become solid at colder temperatures and take a long time to change back to liquid. If it is unfortunately frozen into a solid state and it is urgent to use it, it can be heated in a microwave oven. Generally speaking, olive oil can be stored in a cool place.