In recent years, "black seed oil" or black cumin seed oil has becoming popular as a health food in Europe and the United States market. In fact, black cumin is not in cumin family, but the shape is very similar to the cumin produced in Xinjiang, China (a kind of spice plant for barbecue) is very similar. Black cumin belongs to Ranunculaceae Herbaceae, its scientific name is called "black alfalfa grass planting". Its seeds were with small black triangle shape, which is squeezed to produce the black cumin oil. The oil is very popular currently in the international market.