and tasty it is. It's called Old Chen vinegar because it was born thousands of years ago and has been inherited until today while maintaining the basic technology and with the continuous improvement of brewing technology. Shanxi old vinegar can be kept for 9-12 months in general, and some better vinegars can be kept for at least 3-10 years. Some of the methods used in brewing the vinegar have been considered intellectual properties and are under the protection of Chinese laws. It is a famous product of the region, and is produced primarily in Qingxu County, a vicinity of the provincial capital of Taiyuan. The Shanxi Vinegar Culture Museum has been built there. Local Taiyuan residents, especially those who have lived there for generations, prefer Donghu Mature Vinegar () produced by Shanxi Mature Vinegar Group, which is the largest mature vinegar manufacturer in China. There is also Ninghuafu Yiyuanqing (), a brand of vinegar produced by the Yiyuanqing Company in the old downtown area of Taiyuan. In the United States, some Asian grocery stores sell Shanxi mature vinegar. The common suppliers are Shanxi Mature Vinegar Group, a China Time-Honored Brand company since 1368, and Shuita Brand (), a brewing company located in Qingxu County. Notable dishes References Regional cuisines of China Culture in Shanxi