Nowadays, with people's food safety awareness constantly improving, many people will look at the ingredients list noted on the packaging when purchasing food, but there is another very critical information, which is the shelf life. Especially in recent years, " Omickron " has appeared repeatedly, and many families have the habit of "stocking". It is even more important to stock up on when it comes to stocking up and understanding the shelf life of food .
Not all foods have a "shelf life". Some foods can be stored for a very long time, and can even be understood as having no "shelf life". When stocking up , you can do some screening. You can stock up more of this type of food in moderation. Don’t think that it can’t be eaten after being stocked for a long time, and throw it away directly.
, I will share with you four common foods in life. Their common feature is that they are not restricted by the "shelf life". Don't throw them away after understanding them.
[4 kinds of foods without shelf life]
According to the "Food Label Management Regulations" issued by the General Administration of Quality Supervision, Inspection and Quarantine , it is mentioned that there are four types of foods that can be "exempt the shelf life", namely beverage wine with alcohol content of 10% or more, vinegar, edible salt and solid sugar.
1. High-level liquor
The old saying goes, "Wine is aging fragrance." Since ancient times, there has been a saying of aged wine, that is, the longer the wine is stored, the more fragrant it tastes. If you have a bottle of white wine around you, you can also pick it up and observe it. Generally, only the production date will be marked, but the shelf life will not be marked.
This is because:
In the environment with an alcohol content exceeding 10%, the bacterial ingredients that cause deterioration are difficult to survive. Ethanol has its own bactericidal effect, so it is difficult for white wine to deteriorate;
Secondly, white wine brewed with pure grain will continue to ferment during storage, the wine will taste more mellow and taste more fragrant.
Therefore, liquor has no shelf life. Although it cannot be bad, considering the taste factor, not all liquor is suitable for long-term stocking, but must meet 2 points. One is pure grain brewing, and the other is high-quality liquor (above 41 degrees). Remember, "shelf life" and "drinking period" are two completely different concepts.
2, old vinegar
, other foods that have no shelf life after high liquor are also foods that have no shelf life, which is old vinegar. Aged vinegar with an acidity of .5 g/dL or above has a low pH value, which can significantly inhibit the growth of microorganisms and avoid bacterial contamination, and the shelf life will naturally be very long.
However, should be noted that the emphasis here is on pure natural brewed old vinegar, and it is an old vinegar that has a proper preservation environment and is an unopened old vinegar . If you put vinegar in a high-temperature environment during daily storage, or let the vinegar open the bottle cap and expose it to the air for a long time, it will easily deteriorate.
Therefore, old vinegar with acidity reaches a certain standard has no shelf life, but when storing, you must remember to seal it and store it in a cool environment to avoid deterioration. This type of vinegar, vinegar bottles usually do not indicate the specific shelf life.
3, edible salt
salt can be said to be a must-have seasoning in every household's kitchen. Although the specific shelf life of the salt bags we usually buy at supermarkets is marked with, usually 3-5 years, pure salt has no shelf life and can be stored for a long time and will not deteriorate.
However, some salts sold on the market with other ingredients added, such as iodized salt , low sodium salt, etc., have a shelf life. In addition, if it is salt that has been opened and stored in the air, it is easy to get damp and clump. It is usually not recommended to eat such salt again.
table salt is the main ingredient of sodium chloride . The chemical properties of sodium chloride are very stable. Therefore, for pure salt, it can also be exempt from standard shelf life, but it refers to pure salt that is well-sealed and stored in a cool and dry place.
4, solid sugar
Solid sugar, including our common white sugar, rock sugar, etc., because of its internal structure, it is difficult for microorganisms to reproduce in it, so it is naturally not easy to deteriorate. You will find that many foods will increase the shelf life by adding a lot of sugar. If you have dried jelly, candied fruit, etc., the principle that sugar will not deteriorate easily.
However, similar to salt, sugar is also very easy to absorb moisture. Once it is damp, it is easily contaminated by microorganisms, and sugar can easily attract ant , which will also affect the shelf life of sugar.
Therefore, solid sugar also has no shelf life, but when storing, you should be careful to seal it and place it in a cool and ventilated place to avoid putting it in a humid environment, close to hot things or exposure to the sun.
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