sarson ka Tel-Mustard oil ( 4 Lit.)

This oil has a strong smell, not unlike strong cabbage, a hot nutty taste, and is often used for cooking in Gujarat, Orissa, Bengal, Bihar, Jharkhand, Chhatisgarh, Assam and other areas of India and Bangladesh. In north India, it is mainly used in frying fritters. In Bengal, its is the traditionally preferred oil for cooking, although nowadays neutral oils like sunflower oil are also extensively used. The oil makes up about 30% of the mustard seeds. It can be produced from black mustard  brown Indian mustard  and white mustard
Mustard oil has about 60% monounsaturated fatty acids of which 42% erucic acid and 12% oleic acid, it has 21% polyunsaturates of which 6% is the omega-3 alpha-linolenic acid and 15% omega-6 linoleic acid and it has 12% saturated fats Brassica plant family, including canola (rapeseed) and turnip, are uniquely high in omega-3 (6 -11%) and are the most common, cheap and mass produced source of plant-based (thus, vegetarian source) of that uniquely heart healthy omega-3 fatty acid family (see 'Indo-Mediterranean' diet in the links below). Flax (linseed) oil has 55% plant-based omega-3 but is uncommon as a table or cooking oil. Soybean oil has 6% omega-3 but contains over 50% omega-6, the fatty acid that competes with the omega-3 function. Notably, there are no other common sources of plant based omega-3 in Western and Indian diets. Especially when omega-6 intake is kept low, humans can convert the plant omega-3 into one of the fish omega-3's, Eicosapentaenoic acid, in credible amounts, vital for vegetarians.
In India, mustard oil is often heated almost to smoking before it is used for cooking; this may be an attempt to reduce the strong smell and taste. However, high heat can damage the omega-3 in the oil, reducing its unique role in health. In Western countries, the oil is often sold "for external use only" in stores catering to Indian immigrants, since in North India, mustard oil is also used for rub-downs and massages (see ayurveda), thought to improve blood circulation, muscular development and skin texture; the oil is also antibacterial.