We often say that the alcohol content in wine mainly refers to ethanol. However, in the process of wine brewing, due to the types of yeast, brewing temperature and other reasons, a certain amount of fusel alcohol and lipid substances, such as propanol, amyl alcohol, isoamyl alcohol and various lipid substances, are often produced.
In liquor, these fusels are too little. Without them, the flavor and taste of liquor would be much worse. If there is too much fusel, it will easily lead to head injury and hangover. This is because the metabolic rate of fusel in the body is much slower than that of ethanol. If the fusel content is too high, even if the ethanol metabolism is finished the next day, fusel is still in the body, then the inferior wine is finished. The next day, I was obviously awake (ethanol metabolism was almost completed), but my head was very painful (fusel was still a lot).
The national standard documents have strict regulations on the allowable contents of methanol and fusel in white wine. GB 2757 "Hygienic Standard for Distilled Liquor and Mixed Liquor" clearly points out that the methanol content in liquor must reach
Of course, fusel is not a patent of liquor, but exists in beer, wine and yellow rice wine, and the state has also stipulated the corresponding upper limit standard. The fusel content of some beer and yellow rice wine, including home-brewed wine, is often close to the upper limit allowed by the national standard, or even exceeds the standard, leading to the head and hangover.
Most cheap beers are high in fusel and easy to top. A typical example is a 4.3-degree domestic green bottle beer. Although the alcohol content is not high, the fusel content is not small. People who can drink 782 liquor often feel uncomfortable drinking 4 bottles of this wine. In addition, basically all yellow rice wine has a high fusel content, especially in small factories.
I have seen many guests who can drink more than two kilograms of white wine in the north and come to the south as guests. Southerners want to pour him down in order to show their enthusiasm. What should I do? They all use local yellow rice wine. The production of yellow rice wine in local small factories is not standardized, and the fusel content is too high, which makes it difficult for northerners to adapt. Although the capacity is good, I basically pour as much as I want, and I can't get up until noon the next day. It's embarrassing to shout. I have never been drunk. However, the local people who often drink these yellow rice wines are much more tolerant of fusel, so there are often people who can't drink well, and those who drink yellow rice wine can still put down people who can drink well.
Therefore, good wine is not on the top, which is based on science, not entirely boasting by manufacturers.
I have personal experience. I used to drink low-alcohol beer, but when I drank too much, I felt sick the next day. I'm drinking high-alcohol beer now, and I've drunk too much. Just wake up the next day. The intake of ethanol is similar, and the main difference is fusel.