The use of stale eggs is fraught with unpleasant consequences for the body, sometimes leading to hospitalization. That is why it is worth knowing about simple ways to check eggs for freshness. There are several of them, they are all quite simple.
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Water test
For this test you will need a deep bowl, water and one egg. To find out if it is fresh or not, you need to fill the bowl with water, carefully lower the egg into it. Fresh immediately sink to the bottom and will lie on its side. This happens because the air cells in the egg are extremely small.
An egg of not the first freshness will begin to float or “stand” at the bottom of the bowl in an upright position. The wide side of the egg will be closer to the surface, the narrower - to the bottom.
An egg that is completely floating in the water and does not touch the bottom of the bowl can be thrown right away, as it is more likely to be damaged.
Checking the type of yolk
In this case, you need a flat plate. The egg must be broken and assessed. The yolk of a fresh egg, as a rule, has a round and compact appearance. It is located in the middle of the egg, quite high. The protein surrounding it should be thick enough and be close to the yolk.
A less fresh egg is characterized by a spilled flat yolk and a thin liquid protein that spills over the entire plate.
Light check
You can also evaluate the freshness of an egg in light and in appearance. So, in the light of a lamp or the sun, a fresh egg will shine through, a spoiled egg will appear with blackouts. A fresh egg has a shiny shell; a stale egg has a dull shell.
Sound verification method
You can determine how fresh the egg is by the sound. To do this, you should shake him a little and listen. The fresh inside will not have any echoes and vacillations. For stale - the contents will dangle and beat against the walls. Such an egg can no doubt be thrown right away.
Marking
Labeling on eggs will also indicate the degree of freshness of the product. On diet eggs laid no later than seven days ago, a date is necessarily indicated. On the eggs of the canteens, those that were laid seven to twenty-five days ago, there is no marking date, and the existing designations are painted in blue.