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Groundnut oil vs mustard oil: which for everyday Indian cooking?
The short version. Mustard oil is the frying oil — about 250°C, sharply pungent, and the backbone of North and East Indian cooking and of achaar. Cold pressed groundnut oil is the sweet, nutty everyday oil of Gujarat, Maharashtra and the South, and at about 160°C unrefined it is a tadka-and-sabzi oil rather than a deep-frying one. Most kitchens that use both are using them for different jobs.
Groundnut oil or mustard oil — which is better for everyday cooking?
It depends on two things: whether you deep fry, and what you cook. If you fry regularly, mustard oil is the clear answer at around 250°C. If your cooking is mostly tadka, sabzi and shallow frying, and you want a sweet, mild oil that lets the spices lead, cold pressed groundnut oil at about 160°C does that better.
Regional cooking splits along the same line. Bengali, Bihari, Assamese and Punjabi food is built on the pungency of sarson. Gujarati, Maharashtrian and much South Indian cooking is built on the sweetness of shengdana tel. Neither is a nutritional verdict — it is a flavour tradition, and your palate probably already knows which side it grew up on.
Which one can you deep fry in?
Mustard oil. At roughly 250°C its smoke point is among the highest of any unrefined oil, and it is the one oil in our range we actively recommend for deep frying. Cold pressed groundnut oil sits at about 160°C unrefined, which handles a tadka, a sabzi and a shallow fry comfortably but is not built for repeated deep frying.
This is worth being precise about, because the internet is not. The 227°C smoke point quoted almost everywhere for groundnut oil is the figure for refined groundnut oil. Unrefined cold pressed groundnut oil still carries its free fatty acids and fine seed solids, and the accepted figure for it is nearer 160°C. A lower smoke point is simply what an unrefined oil is — it is the price of everything that was left in, and what refining removes to buy that extra heat tolerance is worth understanding before you judge the number.
How different do they taste?
Completely different, and neither is subtle. Groundnut oil is sweet and nutty; it tastes faintly of roasted peanut and flatters pooris, bhajiya, farsan and dry sabzis. Mustard oil is pungent and sharp, with a catch at the back of the nose that comes from allyl isothiocyanate released when the seed is crushed — a compound that survives cold pressing and does not survive refining.
That pungency mellows considerably when mustard oil is heated to smoking and allowed to cool slightly, which is exactly what Bengali cooking does before adding anything to the kadai. If you have tried mustard oil raw and found it too much, try it that way instead.
Which suits Gujarati, Maharashtrian and South Indian cooking?
Groundnut oil, comfortably. Shengdana tel is the default oil of Gujarat and Maharashtra: undhiyu, farsan, thepla, poha, dry sabzis and the whole family of fried snacks. In parts of Andhra and Tamil Nadu it shares the kitchen with sesame. Its sweetness is unobtrusive, so masalas come through clearly rather than fighting the oil.
Which suits Bengali, Bihari, Punjabi and Assamese cooking?
Mustard oil, and there is no real substitute. Macher jhol, shorshe bata, aloo posto, sarson ka saag, Assamese fish and any pickle worth keeping through the year all depend on that pungency being present. Swap in a neutral oil and the dish is recognisably missing something. Mustard is also the oil of the winter malish and the North Indian champi.
Which is better for pickling and for massage?
Mustard oil for both. In achaar its pungency is part of how a pickle keeps through the year, and a jar topped with cold pressed mustard oil behaves differently from one topped with a neutral oil. For massage, sarson ka tel is the traditional winter oil across North and East India, warmed a little and worked into the skin. Groundnut oil is a kitchen oil; we would not point you to it for either job. We share the massage practice as tradition, not as medical advice.
Black mustard or yellow mustard?
Both are pressed identically and both sit at about 250°C. Black mustard is the more pungent of the two — it is the achaar and malish oil, and the one that will make itself heard in a tadka. Yellow mustard lands softer and sweeter, which is why many households keep it for everyday cooking and reserve the black for pickling and winter. If you are new to mustard oil, start yellow.
Groundnut vs mustard oil: the comparison table
| Groundnut (shengdana tel) | Black mustard (sarson ka tel) | Yellow mustard | |
|---|---|---|---|
| Smoke point, cold pressed | About 160°C | About 250°C | About 250°C |
| Refined figure often misquoted for it | 227°C | — | — |
| Aroma | Sweet, nutty | Strongly pungent | Milder, sweeter pungency |
| Colour | Light yellow | Reddish brown to amber | Reddish brown to amber |
| Deep frying | Not recommended | Yes — our frying oil | Yes |
| Tadka and sabzi | Yes | Yes | Yes |
| Shallow frying and baking | Yes | Yes | Yes |
| Pickling | No | The traditional choice | Workable |
| Massage and champi | No | The traditional choice | Gentler option |
| Regional home | Gujarat, Maharashtra, South India | Bengal, Bihar, Assam, Punjab | Bengal, Punjab |
| Fat profile | Largely monounsaturated oleic, with linoleic; vitamin E | Largely monounsaturated, with omega-3 ALA and omega-6; vitamin E | Same as black mustard |
| Density | 0.93 g/mL | 0.90 g/mL | 0.90 g/mL |
| Shelf life | 4–6 months | 4–6 months | 4–6 months |
Can you just keep both?
That is what most Indian kitchens that care about this actually do, and it is what we would suggest. Keep mustard oil for frying, for achaar and for anything from the east or the north, and keep groundnut oil for everyday sabzi, tadka and western and southern cooking. Two half-litre bottles used inside their 4 to 6 month window beat one litre going stale.
- You deep fry often: mustard oil.
- You cook Gujarati, Marathi or South Indian: groundnut oil.
- You make pickles: black mustard, no substitute.
- New to mustard oil: start with yellow.
- One bottle only, mixed cooking: mustard, because it does more jobs.
A regulatory note for international customers: mustard oil is an everyday edible oil in India and is sold here for cooking, while some countries, including the United States, require it to be sold labelled for external use only. That is a difference in national regulation, and we mention it so nobody is caught out at customs.
Both are Truly Cold Pressed on a wooden ghaani and bottled unrefined, unbleached and undeodorised under FSSAI licence 10724999001232. Shop Wooden Cold Pressed Groundnut Oil, Wooden Cold Pressed Black Mustard Oil and Wooden Cold Pressed Yellow Mustard Oil — or try all three in the Trial Pack of 5 Oils before you choose.