How can you tell if an egg is fresh and how can you tell if an egg is fresh?

Three-step method of egg selection: a look: a layer of hoarfrost is attached to the eggshell of fresh eggs, the eggshell color is bright, and the pores are obvious, otherwise it is an old egg.

Second shake: Gently shake with your hands, there is no sound of fresh eggs, and there is a sound of water is old eggs. Three attempts:

Put the eggs in cold water, sink the fresh eggs, and float the old eggs.

How do you check if eggs are fresh?

Check that the eggs are fresh. Put the eggs in a bowl of water, if they sink down, the eggs are fresh.

Smell: If there is already a distinct smell or peculiar smell, it must be broken.

Floating Test: The one who floats on the surface of the water is the bad guy.

I look at a purchase date and the expiration date and estimate it.

<> a few ways to judge whether an egg is good or bad:

The best test method without breaking the shell: floating water test.

1. Find a bowl and fill it with cold water, then put the eggs in it. If the eggs sink flat into the water, then they are very fresh. If the egg is a few weeks old but still edible, it will be cocked at one end and half standing in the water.

If the whole egg floats on the surface of the water, then throw it away, the egg is no longer edible. If you're going to get an omelette or scrambled egg, you'll do the same with eggs lying flat at the bottom of the bowl and eggs with one end up. However, if it is a hard-boiled egg, which is a practice of boiling the whole egg, then it is better to choose an egg in half a vertical water, because an egg that is too fresh is easy to stick to the shell and is difficult to peel.

2. In fact, to know the freshness of the eggs, you can check the packaging date on the carton, which is the ** date marked according to the Julian date. The Julian date is a chronological method that sets aside the year, with a value from 1 to 365, and because most of the branches will collect the eggs soon after the hens lay their eggs, the Julian date is much more reliable than the so-called shelf life.

1. Weigh the weight.

Eggs of the same size, the light weight indicates that the shouting is not very fresh;

2. Shake and listen to the sound.

If you hear a sound of obvious shaking, it generally means that the egg is not fresh;

3. Look at the expiration date.

Because the temperature and humidity of the eggs stored at home are difficult to control, some eggs can not be said to be fresh even if they are shaken, so it is not recommended to eat them when they are stored for a long time or when they are close to the expiration date.

The quality, nutritional value and freshness of eggs are closely related, even if they are AA grade packaged eggs, they will become A grade or B grade after a long time. Therefore, when consumers buy eggs, they should not only pay attention to the grade label, but also pay special attention to the production date of the product. In addition, there are some tips to help you see the bridge blindly.

Touch it. If the egg is too smooth to the touch, the eggshell membrane has almost "disappeared" and the freshness has decreased significantly. We can also weigh the weight of the eggs, the same size of eggs, the weight of the feel means that the water evaporates less, and it is fresher.

Inside each egg shell is an empty space for the unhatched chicks to breathe, known as the air cell. As the storage time is extended, the moisture and carbon dioxide in the egg continue to penetrate outward through the holes in the eggshell, and the air chamber will continue to increase, and the position will also be biased to the side of the egg.

When purchasing, we can point the egg to the light source and observe its air chamber.

If you want to judge whether the eggs at home are still fresh, we can also use a bowl of water to test the buoyancy of the eggs, the fresh eggs will sink to the bottom of the water, the less fresh the eggs, the higher the floating position.

If you peel the egg and smell a pungent smell, it means that the egg has gone bad.

How to make boiled eggs:

1. Wash the fresh eggs, soak them in a pot of water for one minute, and then bring to a boil over low heat. This is to prevent the eggshell from bursting during the boiling process.

2. After the eggs are boiled over low heat, then switch to warm heat and continue to cook for 3-7 minutes according to personal taste. Trembling of the slag.

3. Hard-boiled eggs do not have to be taken out immediately, take them out after 1 2 minutes, or put them in cold boiled water or cold water to cool down for half a minute, so that the Rongduan Liangcha is easy to peel.

Crafting tips. 1. Soak the eggplant in water.

Before boiling eggs, it is best to soak them in cold water for a while. At the beginning of cooking, the water must be submerged over the eggs, otherwise the boiled eggs will not only be unevenly cooked, which will affect the taste, but the yolk will also move out of the egg core and move to the eggshell. Soak the eggs in cold water for a while to reduce the air pressure inside the eggs; Then put it in a pot of cold water and boil so that the eggshell is not easy to break.

2. Firepower. If high heat is used when boiling eggs, it is easy to cause the air in the eggshell to expand sharply and cause the eggshell to burst; If you use low heat, it will prolong the time of boiling eggs, and it is not easy to grasp the age and tenderness of good eggs. Practice has proved that boiled eggs are most suitable over medium heat.

<>1. Look at the appearance: Don't buy eggs with sand spots on the eggshell, because its eggshell is thin, which is easy for bacteria to enter the inside of the egg and make it not fresh.

2. Listen to the sound: pick up the egg and shake it in your ear, if there is no sound, it is a fresher egg; The sound of water swaying is an old egg.

3. Blister: If the eggs are bought and put away for too long, they can be tested in water. Pour a small basin of water and put the eggs in the water, if the eggs sink quickly, it means that the eggs are still fresh, and the eggs floating on the water are not edible.

Judging whether the egg is fresh, generally speaking, the surface of the fresh egg shell is shiny and complete, and there is a layer of hoarfrost on the eggshell, if you shake it up, there will be a feeling of space, and the weight is very light, such an egg is bad, the egg is not fresh, and the sound of shaking is more solid is a fresh egg.

There are many ways to judge whether an egg is fresh, for example, you can take a glass of water to test it, put the egg in the water, if the egg sinks directly to the bottom of the cup, it is fresh, and if it floats on the water, it is not fresh enough.

First, from the appearance.

Eggs feel good when you put them in your hand. Fresh eggs have a rough feel, with a raised surface and a layer of white frost, which is a protective film of itself; Stale eggs feel smooth to the touch in the hand, and will be shiny to the light, such eggs are very stale eggs; There are some black dots on the surface of the egg, and if they come out of the shell, the egg is rotten and cannot be eaten.

2. Test freshness.

Place the egg in the water and see if it floats. The egg has a small air chamber, and over time, air will slowly enter the egg through the small holes in the shell. The more air that enters the egg, the larger the air chamber in the egg and the easier it is for the egg to float.

If the egg sinks horizontally to the bottom of the bowl, then the egg is at its freshest.

If the egg stands up, but one end is still in contact with the bottom of the bowl, then the egg is past its freshest time, but it is still ready to eat.

If the egg floats, then it is not fresh anymore. But that doesn't mean it's spoiled or inedible. You still need to knock it open and tell if it has gone bad by looking at or smelling it.

3. Sound. Hold the egg to your ear and shake it to see if there is any sound. As eggs age and become wet, the carbon dioxide in the eggs will seep out of the shell, the yolk and egg whites will slowly shrink and dry out, and the air cells will become larger and larger. [5] The larger the air chamber, the more space there is for movement inside the egg, so when the egg is shaken, the louder the sound inside is.

Fresh eggs should not make any noise, and if they do, they will not be very loud. When you shake an egg, you make a loud noise, which only means that the egg is not fresh, but it does not mean that it is not edible.

Fresh eggs are not smooth on the outside, but you can feel them when you touch them, and they look like they have a layer of hoarfrost on your eyes. Stale eggs are particularly smooth on the outside and do not have the feeling of hoarfrost. Pick up the egg and shake it with your hand, and feel that the egg liquid is fresh if it does not shake, and the egg liquid is not fresh when it shakes.

Whether the eggs are fresh or not, you can put the eggs in the water or shake them in your hands. If the eggs float in the water, they are not very fresh. Or after shaking, the shaking of the star is not new.

Pinch the raw egg with your fingers, put it in front of your ears and shake it gently, you can't hear the sound and you can't feel that there is shaking in the raw egg, indicating that it is a fresh raw egg; If you hear the sound of liquid shaking in the raw egg, it indicates that the raw egg is an aged egg.

Point the raw eggs to natural light or lighting effects, and observe the eggshell hue and egg yolk wheel corridor at the end of the ring of raw eggs, fresh raw eggs are slightly bright red, transparent color, and the egg yolk wheel corridor is clear; It is not completely transparent, the egg yolk wheel corridor is not clear, and the egg shell is black, indicating that the raw egg has long been moldy.

How can you tell if an egg is fresh? To judge whether the egg is fresh, it can be that the skin of the fresh egg has small particles, and the protruding epidermis is slightly whitish, like a layer of hoarfrost, and the color is distinct. It is also possible to point the sun or light at the end of the egg prototype to observe the color of the eggshell.

Take an egg and shake it in your ear, if there is no sound, it is basically fresh, if there is a sound of running water, it means that it is yellow, and the egg is not very fresh.

You can take an egg and shake it in your ear.

If there is no sound, it is sure to be fresh eggs.

If there is a sound of running water, it means that it is yellow.

The eggs are not so fresh anymore.

Yes, you can open the raw eggs and observe the egg whites.

The more liquid the egg white, the fresher, you can also look at the color of the egg yolk.

Very simple, fresh eggs, shiny, with the fresh fragrance of eggs, and no rotten eggs or oligo-eggs taste, this kind of eggs are relatively fresh, and eggs, fresh egg pores are particularly large, if the pores and pores have been blocked, it means that it is rotten eggs.

How to tell if an egg is fresh or not

Weigh the weight

Eggs of the same size,LightweightInstructionsNot too freshFinish;

Shake and listen to the sound

If you hearNoticeable shaking sound, in general, the eggs are notNot freshFinish;

Look at the expiration date

As the home keeps eggsTemperature, humidityIt's hard to control, and some eggs can't be said to be fresh even if they can't be heard when they are shaken, soLonger storage timeOrNearing the expiration datetime, justIt is not recommended to consume it againFinish;

How eggs are stored

Suitable temperature for storing eggs

Home storage is generally instorage in between;

The shelf life of eggs at room temperature

Because there is a difference between the normal temperature in winter and summer, soat room temperatureEggs are stored for a different time15 days in summer, 30 days in winter and 45 days

The shelf life of refrigerated eggs

If refrigerated in the refrigerator, eggs can last for 45 to 60 days.

But it also depends on the humidity in the refrigerator, too much humidity is also easy to mold, it is best to control it below 70%, the lower the humidity, the better.

Precautions for refrigerating eggs

What to do with refrigerated eggs

If it is a product with packaging produced by a regular manufacturer, it generally does not need to be cleaned, and it can be directly put into the refrigerator for refrigeration.

If it is a loose egg, you need to check whether there is anything unclean such as feces on it; In order to prevent moisture when refrigerating, it is best to take paper packaging, if it is not packaged, it can also be covered with a layer of paper on the eggs to absorb moisture;

If there is obvious dirt, it can be stored separately in a paper package, or it can be washed, but after cleaning, it needs to be coated with a layer of cooking oil and then refrigerated;

1. Observe the eggs. Fresh eggs have small granular bumps on the skin and are slightly pale in color. Stale eggs will have smooth shells or black spots on the skin.

2. Bump eggs. Putting two or more eggs in your hand and colliding with each other can make a crisp sound, indicating that the eggs are relatively fresh. If it makes a dull sound, it means that it is an aged egg or a spoiled egg.