With corn vinegar, vinegar has a strong flavor, pure taste and good taste. The brewing method is: First, making music. Choose corn kernels with good quality, full grain, and no pests, depending on the amount of vinegar. Peel the corn first, roll it into Michazi, and then pour it into a cylinder or bucket filled with clean and cool water. The amount of water is appropriate to cover the rice. After 8 days - 9 days, remove it and put it in a clean cloth bag. After the water is dry, hang it in a cool place. A month later, Michazi grew green mold layer in the bag, the more mold, the better. Second, brewing. The crushed green fungus is poured into a clean cylinder or bowl, filled with water at a rate of 1 kg of song plus 5 kg of water, covered with a patch of cloth or a cotton-covered wooden cover, and sealed. Stored indoors, 2 months to 3 months after unsealing, it is vinegar. Third, pay attention to matters. Do not use pickled jars or vinegar. If you break the song and find a black powdery mass, you should pick it out and burn it. After the vinegar is made, it is necessary to keep the inside and outside of the vinegar bottle clean to avoid odor.