I like to eat white wine. The older the domestic liquor, the more fragrant it is. There are two reasons for the change.
Generally speaking, new wine is irritating and has a bad smell, and often has a bad smell and a new wine taste. After a certain period of storage, the wine became soft and fragrant, more mellow and softer than the new wine. This phenomenon is called aging of liquor. The changes of liquor during aging can be roughly divided into physical changes and chemical changes.
physical change
Rearrangement and volatilization of wine molecules. The greater the degree of freedom in liquor, the more alcohol molecules there are, and the greater the irritation. With the extension of storage time, alcohol and water molecules gradually form large molecular association groups, alcohol molecules are bound, activity decreases, and the softness of wine will be better. Moreover, there are some bad ingredients with low boiling point in the new wine, which will make the wine feel more exciting and the fragrance and taste are not pure enough. These substances will naturally volatilize after long-term storage, making the wine more and more fragrant.
chemical change
The chemical changes of liquor during natural aging are mainly comprehensive changes such as oxidation, reduction and esterification. Alcohol in wine will be oxidized to acetaldehyde, acetaldehyde will be oxidized to acetic acid, and acetic acid will further react with alcohol to produce ethyl acetate and higher esters. Due to the special aroma of esters, most wines will become particularly mellow after being stored for a certain period of time, reducing the spicy taste of the wine body.
The older the liquor in our country, the more fragrant and delicious it is.
There are some differences between domestic liquor and foreign liquor in taste, brewing technology and raw materials.
Taste: The taste of domestic liquor is usually more rich and mellow, with unique aroma and taste. However, foreign liquor tastes more and more fresh, which is more in line with the taste needs of modern people.
Brewing technology: In the brewing process of domestic liquor, traditional solid-state fermentation technology is usually adopted to make liquor more mellow. In the brewing process of foreign liquor, more modern production techniques, such as liquid fermentation, may be adopted to make liquor more fresh and refreshing.
Raw materials: In the brewing process of domestic liquor, sorghum and wheat are usually used as the main raw materials, and these two crops are widely planted in China with good quality. In the brewing process of foreign liquor, different raw materials may be used, such as grapes and barley, and the quality and taste of these raw materials will be different.
Liquor aging is a complex process involving many factors and links.
Aging principle: During the aging process of liquor, alcohol molecules and water molecules in liquor will interact to form new molecular association groups, which will make the liquor taste softer and the aroma richer. At the same time, various components in the wine will also undergo chemical reactions such as oxidation, reduction and esterification to generate new compounds, further improving the taste and flavor of the wine.
Aging environment: Liquor aging needs to adapt to environmental conditions, such as temperature, humidity, light and so on. Generally speaking, the temperature of the aging environment should be controlled between 20-30℃, and the humidity should be kept at about 60%-70% to avoid direct sunlight.
Aging time: The aging time of liquor varies with the type and quality of liquor. Generally speaking, the aging time of high-quality liquor needs to reach several years or even longer, while the aging time of ordinary liquor is relatively short. During the aging process, the quality of wine will gradually improve with the passage of time.
Aging container: The aging container of liquor is generally made of clay pots, wooden barrels and other materials. These containers have good air permeability and heat preservation, which is beneficial to chemical reactions such as oxidation and reduction of substances in wine.
Aging management: During the aging process of liquor, it is necessary to check and manage liquor regularly, including recording the changes of liquor and adjusting the temperature and humidity. At the same time, we should pay attention to prevent pollution and oxidation.
Not all wines will get better with age.
The aging effect of liquor is related to many factors, including alcohol content, brewing technology and storage environment. Generally speaking, high-grade liquor is more suitable for aging, because over time, alcohol molecules will gradually evaporate, leaving a more mellow aroma and taste.
For some low-alcohol liquors, due to the low alcohol content, the substances in liquor are easy to be oxidized and acidified during the aging process, which leads to the decline of liquor quality and poor taste.
Different kinds of liquor have different aging effects. For example, the aging effect of Maotai-flavor liquor is better, because a large number of aroma substances will be produced in the brewing process, which will become more abundant and coordinated over time. However, the aging effect of other flavor liquors may not be as good as that of Maotai-flavor liquors.
Domestic liquor is a case of getting more fragrant with age.
For example, the taste and aroma of high-end liquor of well-known brands such as Wuliangye and Maotai will be greatly improved after a long period of aging. During the aging process of these liquors, the substances in liquor will gradually undergo chemical reactions such as oxidation and reduction, and new compounds will be generated, which will make the liquor taste softer and the aroma richer.
In addition, some local liquors, such as Shanxi Fenjiu and Henan Baofeng Daqu, also have the characteristics of aging and fragrance. During the aging process, due to local climate, water quality and other factors, these liquors will form a unique flavor and aroma.
Therefore, many liquor lovers will choose to buy some high-end liquor or local specialty liquor for aging, hoping that the quality and taste of liquor can be further improved after long-term storage.
skill
If you want to drink high-quality and delicious liquor, you need to age it. Of course, aging needs a suitable environment for them to quietly brew the flavor you want. Cheng Chuan Liquor Machinery reminds everyone that it is best to choose pure grain liquor. If conditions permit, you can brew your own liquor and store it in the wine cellar. When choosing homemade liquor, we must choose excellent brewing equipment that can meet the standards.