Mustard oil vs refined oil: nutrition, cooking and which to choose

Mustard oil is pressed from mustard seeds; a cold-pressed version preserves antioxidants and phytonutrients but, the guidelines note, still contains undesirable compounds of the kind found in crude oil. The oil carries 11.6 g of saturates per 100 g against 59.2 g of monounsaturates.

Refined oil is cleaned with chemicals to remove unwanted compounds from the crude oil, and the process also removes the odour and extends shelf life. It keeps the fatty acid profile of whichever seed it came from, but loses small amounts of minor components such as antioxidants and phytosterols along the way.

Both are fat. Every oil is 100 percent fat, and the dietary guidelines note that 1 g of any fat or oil gives the same energy, so the deciding factors are taste, what was pressed and what the refining left behind, not the calorie label.

Want the numbers first? The table below puts mustard oil's fat profile against what refining changes. Choosing for a person? Skip to which for whom. Choosing for a dish? The taste and cooking section decides. The mustard oil guide covers the oil on its own, from names to everyday uses.

Mustard oil's numbers are USDA FoodData Central values per 100 g; the refined-oil column follows what the Dietary Guidelines for Indians say about refining: it does not alter the fatty acid composition of the oil.

Every oil is energy-dense, so the last rows matter more than the first: what the seed carried and what the process left. Mustard oil's full per-100 g composition, including the zeros for protein and minerals, sits in the table below.

Per 100 g raw, edible portion. Composition: USDA FoodData Central (SR Legacy), FDC ID 172337, NDB 4583. — means not reported. These are average values for the food; the label on a pack gives the values for that product.

The nutrition question splits in two: what is in the bottle, and what the guidelines say the body should do with the fats.

What is in the bottle. Mustard oil is 100 g of fat per 100 g, at 884 kcal, with zero protein and carbohydrate and a zero for every vitamin and mineral the USDA entry lists. Its fat profile, per USDA FoodData Central: 11.6 g of saturated fatty acids, 59.2 g of monounsaturated fatty acids and 21.2 g of polyunsaturated fatty acids. The monounsaturates are dominated by erucic acid (22:1) at 41.2 g per 100 g, with oleic acid (18:1) at 11.6 g; the polyunsaturates split into 15.3 g of linoleic acid (18:2) and 5.9 g of alpha-linolenic acid (18:3).

What refining changes. Refining does not alter the fatty acid composition, so a refined sunflower or soybean oil keeps the profile of its own seed; what it loses is the odour and small amounts of minor components such as antioxidants and phytosterols. Cold-pressed mustard oil goes the other way: expeller pressing without heat preserves antioxidants and phytonutrients, though the guidelines add that such oils, like crude oil, carry undesirable compounds too. A refined oil is not one product with one profile; the seed it came from decides the fatty acids, so the table above can fill only the mustard column with exact numbers.

What neither oil contains. No plant-based oil contains cholesterol, per the dietary guidelines, and every oil is fat, so a no-cholesterol claim on any vegetable-oil bottle is true of every other bottle too.

Fat quality. WHO's 2023 guideline recommends reducing saturated fatty acids to 10 percent of total energy and replacing them with polyunsaturated fatty acids (a strong recommendation) or with monounsaturated fatty acids from plant sources (a conditional recommendation), and reducing trans fatty acids to 1 percent of energy. Against that, mustard oil carries 11.6 g of saturates for every 59.2 g of monounsaturates.

Erucic acid is a typical constituent of mustard or rape, and a 2014 study measured 0.3 to 50.8 percent in nine mustard oil samples from Germany and Australia, seven of which crossed the 5 percent limit the authors cite.

In rodents, high erucic acid has been linked to myocardial lipidosis and heart lesions. A 2022 review in the Journal of Clinical Lipidology records that the US FDA, on that evidence, banned mustard oil for cooking, while Australia, New Zealand and the European Union allow it within upper limits. The same review adds that the Lipid Association of India recommends mustard oil as heart-healthy, that 29 countries allow limited amounts for human consumption, and that a new FDA review is recommended. Its practical suggestion is to bring canola, olive, sunflower or soybean oil into the cooking while keeping flavour and texture.

Taste. Mustard oil is sharp and pungent; its strong flavour suits pickles, marinades, dressings and dips, and COWBERRY's cold-pressed version is described as keeping the oil's bold aroma and rich taste. Refined oil is the neutral choice, because refining removes the odour and the oil adds little of its own.

Heat and smoke point. Neither the USDA entry nor COWBERRY's product notes give a smoke point figure in numbers. COWBERRY's product notes describe its cold-pressed mustard oil as having a high smoke point and as suitable for deep frying, sauteing and high-heat cooking.

Reusing the oil. The rules are the same for both. The dietary guidelines say oil once used for frying should be filtered and kept only for curry preparation, not for frying again, and used within a day or two. A 2019 review in Critical Reviews in Food Science and Nutrition reports that repeatedly heated oils generate polycyclic aromatic hydrocarbons, some reported as carcinogenic, and that heavy consumption of these oils has been associated with lung, colorectal, breast and prostate cancers in the studies it covered.

Where each shines. Mustard oil fits dishes where its pungency is the point, such as a traditional mango pickle; refined oil fits where the dish should taste of itself. For the two kinds of processing compared in depth, see our comparison of cold-pressed and refined oil.

Refined oil is usually the cheaper of the two per litre, and cold-pressed mustard oil usually costs more than ordinary mustard oil. Beyond cost, the dish and the kitchen decide.

Mustard oil is popular across South Asia, particularly in India, and fits where the dish wants its sharpness: pickles, curries, dressings and dips. Refined oil fits neutral, low-odour cooking and kitchens that want one all-purpose bottle. Neither is a health food, and neither invites pouring more: the dietary guidelines' visible-fat limit of 20 g to 50 g a day applies to both.

• Everyday pungent cooking: mustard oil. Its sharpness carries pickles, curries and traditional preparations.
• Neutral, low-odour cooking: refined oil, since refining removes the odour and extends shelf life.
• Someone watching saturated fat: compare the figures. Mustard oil carries 11.6 g of saturates per 100 g, and a refined oil carries the fatty acid profile of its own seed.
• Someone avoiding erucic acid: since mustard and rape are where erucic acid typically occurs, look at oils from other seeds; the US ban and the European limits are covered above.
• Someone with a heart condition: the guidance is divided: the FDA ban rests on erucic acid's effects in rodents, while the Lipid Association of India recommends mustard oil as heart-healthy. Talk to your doctor or dietitian about which oil fits your fat plan.
• Anyone buying mustard oil: check the pack the same way for every bottle; our guide to identifying pure mustard oil walks through the tests and the label.
• Anyone who cooks with refined oil: what refining changes is weighed on the refined oil and health page.

Difference between mustard oil and refined oil?

Mustard oil is pressed from mustard seeds (a kachi ghani version without heat) and keeps a sharp, pungent taste. Refined oil is a vegetable oil cleaned by chemical refining, which removes unwanted compounds and the odour, extends shelf life and leaves the fatty acids unchanged. Both are 100 percent fat, so the energy per gram matches; taste and processing are the real differences.

Does mustard oil increase cholesterol?

No plant-based oil contains cholesterol, so mustard oil itself adds none, and the dietary guidelines make the same point about every vegetable oil. On heart health the guidance is split: a 2022 review recounts the US FDA ban over erucic acid and the Lipid Association of India's opposite, heart-healthy recommendation. If you have high cholesterol, ask your doctor or dietitian how this oil fits your fat allowance.

Can mustard oil be used for cooking?

Yes. COWBERRY's product notes describe cold-pressed mustard oil as having a high smoke point and as suitable for deep frying, sauteing and high-heat cooking, and its pungency suits pickles, marinades, dressings and dips. After frying, filter the oil, keep it for curries only and use it within a day or two, as the dietary guidelines advise.

Why mustard oil is banned in us?

The US Food and Drug Administration banned mustard oil for cooking because of erucic acid, which has been associated with myocardial lipidosis in rodents; a 2022 review recounts this history. Australia, New Zealand and the European Union allow mustard oil within upper limits instead, and the same review notes that the Lipid Association of India recommends it as heart-healthy; its authors call for the FDA to re-examine its erucic acid limits.

Is mustard oil good for health?

It is a cooking fat, 884 kcal per 100 g, so the amount in the pan decides. ICMR-NIN's guidelines limit visible fat, all oils combined, to 20 g to 50 g a day depending on physical activity. Within that, mustard oil brings 11.6 g of saturates against 59.2 g of monounsaturates per 100 g, plus an erucic acid question the research still weighs; both sides are weighed in our guide to mustard oil benefits and side effects.

Which mustard oil is best for health?

No ranking of brands or types comes from FSSAI or ICMR-NIN. Their guidance supports a short list instead: sealed and labelled, cold-pressed if you want the antioxidants and phytonutrients preserved, from a reliable source, and poured within the day's oil limit. Choose the bottle that passes those checks and matches your cooking.