When the season changes, people can always smell the strong vinegar in the air. I can always recall my high school days, when the head teacher liked to smoke vinegar in the classroom. The sour and cool momentum is hard to forget. The teacher’s original intention is naturally good, hoping that acetic acid volatilized into the air can kill all bacteria and viruses in the classroom and avoid the occurrence of mass colds. Unfortunately, although jealousy is strong, the effect is not good. Why is it vinegar? Vinegar is sour, and what [jealous] wants is the taste that cannot be lost. Traditional vinegar is brewed from grain, and the process is similar to brewing wine. Starch in grain is oxidized Read More …