Why is there no expiration date for liquor?

As the saying goes, "liquor is the fragrance of old", mainly refers to white liquor, why is there no expiration date on white liquor, is it true that white liquor will never go bad?

 1. Why is there no expiration date for liquor? 

As we all know, most liquors get better with age, and liquors aged 10 or more than 20 years have refreshing aroma and softer taste, so why doesn't liquor have a shelf life like other foods?

According to the relevant regulations of our country, beverages with an alcohol content greater than or equal to 10vol% can be exempted from marking the expiration date. Because microorganisms cannot grow and reproduce even in a 10% alcohol solution, and cannot produce harmful substances; the alcohol content of liquor is relatively high, and above this alcohol content, it is basically difficult for fungi to survive and there will be no deterioration problems, so it can No expiration date is required. Moreover, the chemical changes of liquor with high alcohol content will be very small, and the sealing technology is now developed, so there is no need to mark the shelf life.

However, if the alcohol content is very low, the microorganisms in the liquor are easy to grow and multiply, which will cause the liquor to deteriorate and produce sour taste. Therefore, low-alcohol liquor should not be stored for a long time.

 2. Ordinary liquor will become better after aging? 

The longer the liquor is aged, the more fragrant it is, mainly for white liquor and rice wine, but not necessarily for low-alcohol wine, such as beer and wine. Rice wine, wine, red wine, fruit wine, etc. all have their shelf life, and the quality of wine stored for too long will decrease or even cause deterioration. Low-alcohol liquor with an alcohol content of less than 40 will hydrolyze the esters after storage for a period of time, resulting in a bland taste.

 3. How to store liquor scientifically? 

If you are interested or in need, you can learn scientific methods to store your own liquor for a few more years, so how should you store liquor?

"Generally speaking, a relative humidity of around 70% is appropriate. If the humidity is too high, the bottle cap will easily rot; when the temperature is between 0 degrees and 20 degrees, fireworks are strictly prohibited. The container must be tightly sealed to prevent leakage and reduce alcohol content." Baijiu expert According to the introduction, it is better to store in an environment protected from light, with suitable humidity and temperature, and to "watch more and move less" during the storage process.

Another very important point is to choose liquor suitable for long-term storage, such as high-alcohol liquor is more suitable for collection. Not all liquors get better with age. Some liquors will enter an "aging period" and lose their original flavor if they are stored for too long.