I have been using Patanjali Aarogya Kachi Ghani Pure Mustard Oil for the last 6 months and can say that this is the best of all. Nowadays, mustard oil is mixed with Argemone oil an extract from argemone seeds simply to increase their quantity. Consumption of this oil is detrimental to health, especially among children. In adults it raises the level of bad cholesterol, extremely harmful for the heart. However, this particular brand can be considered healthy as it is devoid of trans-fats, is low in saturated fats and has a high content of mono-unsaturated fats and polyunsaturated fatty acids such as omega-3. This oil has a typical pungent taste that justifies its natural composition and is completely ideal for any kind of cooking, be it spicy, pickled or any kind of simple preparation.Compared to other brands, the price is totally acceptable, 1 ltr costs around 135/- rupees. If purity is what is required then this is the one that is a must buy.