Patanjali Kachi Ghani Mustard Oil, also known as sarso oil, is crafted from black mustard seeds using the cold-press method. In this process, the mustard seeds are crushed at low temperatures, ensuring a natural and unadulterated extraction of mustard oil. This cold-press method is valued for preserving the inherent qualities of the mustard seeds, making it a naturally processed and high-quality mustard oil.