Sesame oil, called sesame oil and sesame oil in the north, is extracted from sesame seeds and has a special fragrance, so it is called sesame oil. According to the extraction methods, it is generally divided into squeezing method, filter pressing method and water substitution method. The small ground sesame oil is the sesame oil made by the traditional process water substitution method.

Among them, Nanyang sesame oil has an authentic fragrance, which is derived from sesame seeds grown in the local climate of Nanyang Basin. Nanyang basin is located in the southwest of Henan Province, between Qinling Mountains and Tongbai Mountain. The climate here is mild, the environment is pleasant and the soil is fertile, which is very suitable for the growth of sesame. It has been established as a sesame planting demonstration base of Chinese Academy of Sciences, and sesame oil is known as authentic and famous products in Nanyang.